I was 14 at the start of 9th grade, and then turned 15 at the end and beginning of 10th. So 9th-10th grade depending where in the year your birthday falls. I have a spring birthday.
Where I live some children begin kindergarten at 4 years old and some at 5 years old, depending on birth month.
So, 15 year olds born earlier in the year will be in 10th grade because they started school at 4 and 15 year olds born later in the year will be in 9th grade because they didn’t start school until they were 5.
Sophomore year of high school – 10th grade. Depending on where the cutoff for the grade is and when their birthday is they could also be in 9th (freshman) or 11th (junior).
For example, most school districts near me cut off in the fall (like must be 5 by September 30th to enter kindergarten). I have a friend who was born at the end of September so she was always one of the youngest in her grade. So she was 15 for most of sophomore year and the beginning of junior year.
My birthday is in the spring, so I was 15 before the end of freshman year and 16 before the end of junior year.
I have another friend who was born in November and was always one of the oldest in the grade, so she was 15 for most of freshman year and only stayed 15 for a couple of months at the beginning of sophomore year.
This is the standard age for the average American. You will see some 13 year olds in 9th grade who were placed into school early or were moved up a grade for good academics. You may see 19 year olds in 12th grade if they were held back or started late.
If you are currently 15 and turned 15 after September 2024 you would be in 9th grade going into 10th grade come next fall based on usual age cut-off dates for American schools. If you are 15 and will be turning 16 before September 2025 you would be in 10th grade going into 11th grade come next fall.
9th and 10th. I know I turned 16 in 10th (sophomore) so I would’ve turned 15 in 9th (Freshman). That’s assuming the person hasn’t been held back or skipped any grades.
My birthday is late in the calendar year, but early in the school year. So I turned 15 a few months into 9th grade and stayed that way a few months into 10th
Most will turn 15 during 9th grade. Some during 10th. Depends on when your birthday falls and when the cut-off was when you started school. My birthday was about a week after the cutoff when I started and as a result, I was 15 for the majority of 9th grade.
Standard formula for determining grade… Age minus 5. Works based on the idea that most Americans start kindergarten at five years old. There are exceptions, of course. But generally an 8 year old is in 3rd grade (8-5 = 3), a 16 year old is a junior (16-5 = 11), etc, etc, etc. Most kids start the grade at that age and have the next birthday some time during the school year.
Fun fact, August and September are the most common birth months. Hence why a lot of school districts put their cutoff date at the end of September, even if school starts earlier than that (meaning a handful of kindergartners start at 4 yo, then turn 5 within a couple of weeks). It’s actually for this reason… to maintain the group as being mostly 5 years old, turning 6 some time in the school year.
Most kids are 14 at the beginning of 9th grade and turn 15 during that school year. So for 10th grade, they’re 15 for part of the year and 16 for the rest
10th. I turned 15 a few days before the school year started. My birthday was the cutoff date, everyone who didn’t get held back or skipped forward started 10th at 15 years old.
The youngest age for Kindergarten is typically 5 years old. As such, age – 5 years is the grade most students will be in in the fall for their academic career.
There are exceptions, but nearly all students begin Kindergarten at age 5. I only have to mention that exceptions exist because this is reddit.
9th or 10th. Most students start 9th grade at 14 and turn 15 during that year. They start 10th grade at 15 and turn 16 during that year. At least in the state where I’m from. It could depend on the state or even the district.
It could be anywhere from 9th to 11th depending on the school district and their age requirements. My school district allowed me to start kindergarten at age 4 because my fifth birthday fell before the cutoff date. I turned 15 during my 10th grade year, and was still 15 when I started 11th.
Compare that to my brother-in-law, who is only a week younger than me. His birthday fell after the cutoff, so he started school a year after I did, meaning he turned 15 during his 9th grade year.
Most kids go into 9th grade at 14 and usually turn 15 by the end of 9th or during the following summer, then enter 10th grade when they’re 15. The end result is that kids are usually 18 by the time they graduate high school, which is when our country deems them adults (no work restrictions, can vote and sign contracts without parents, etc).
Most likely to be 10th grade as a 15 year old. Maybe 9th if they repeated a year.
Depends on when their birthday is, of course. In my state, you started 1st grade if you turned 6 before September 2nd 1996
9th or 10th grade in my school district. You start kindergarten at 5 years old, but if your birthday is in the fall you might be a bit older than your classmates depending on the cutoff date.
Usually 8th or 9th, from my experience (aside from kids that were held back for poor performance or for weird birthdate issues, kids were generally grade+5 years old when starting and grade+6 years old when finishing).
Depends on when the birthday and the cutoff is. I have a very late birthday, so I was 15 from halfway through 10th grade to halfway through 11th grade. Usually, people turning 15 are in 9th grade (or just before it), the summer before 10th, or in my state under prior cutoff rules, early 10th grade.
I was a freshman (9th grade) when I was 15. My parents tried to get me into kindergarten a year early because I was born around the cut off date but I failed the kindergarten screening.
Like others said, it depends on when your birthday is. Mine is in December, so I turned 15 in the first semester of 9th grade.
I don’t remember what the cutoff date was when I started, but I was older than the majority of my classmates. As a result, I was also the first of my friend group to be licensed to drive solo. I was very popular for rides, at least for a few months 😂
Should be 9th or 10th grade depending…. For example I turned 15 the last 2 weeks of my 9th grade year and then was 15 entering and most of 10th grade. But I had friends that turned 15 the beginning of 9th grade year.
15-5= 10 … 4 being avg age of kindergarten, then +/- 1, so 9-10-11 grade. Depends on when birthday is & whether it’s Jan-May (end of school yr) or Sept-Dec (start of school yr).
I would say 10th grade. There are going to be exceptions. When I was middle school, I lived in an area where it was not uncommon for students to be held back, so by eighth grade I had a handful of 15-year-old classmates. When I was in high school, we had moved to an area that had a much earlier cutoff date. A lot of my classmates had autumn birthdays, so by the end of the first semester of 10th grade, a significant portion of my class was already 16. And I think I only knew of a couple people that had been held back – it was way less common in that school district.
Very simple way to estimate a child’s age (1st – 12th grade). If you know what grade they are in and it is sometime between July and December, then add their grade to 5. If it is sometime between January and June add 1 on top of that. The way this math works is that the majority of kids in the U.S. start first grade at 5 years old. So if they are in seventh grade and it’s October, they are most likely 12 (5+7). Now, once you get past December, you have less than half of the birthdays left in a school year. So that’s why if it’s march, then you would guess 13 for a seventh grader and you would probably be right.
My birthday fell funny, so I was older than most of my cohort. I turned 15 just a couple of months after 9th grade started. I was already 18.5 when I graduated high school.
9th or 10th in my experience, depending on when their birthday falls. I believe the birthday cutoff for my state/district for public schooling is September 1st.
It varies due to the way the school years are and how what time of year a child was born in, but usually if a kid started at the normal age and has not failed, they will turn 15 during their 9th grade of school. Which we call Freshman Year.
They’d typically be a freshman in high school (9th grade) or a sophomore (10th grade) unless they flunked a grade like my husband or were bumped up a grade like they wanted to do to me lol
My birthday is in September. I started high school at 13 because school starts in August. I was 15 in the 10th grade. They actually changed the rules and my mom had to fight for me to start school.
You turn 15 in 9th grade most of the time and then are 15 at the start of 10th grade. Of course it depends on birthday/school year but in general that’s how it is.
I was just turned 13 when I started 9th grade, but I started school early. Most kids start kindergarten if they are 5 before Sept., so most are 14 turning 15 in 9th. I turned 17 a couple months before I graduated, & was almost the youngest student on campus when I started college at a small private university that fall. (The youngest was a 16-yr-old British guy.)
So a 15 yr. old is likely either in the spring term of 9th grade, or the fall term of 10th grade.
Depends on the school district. Where I went to school, kids were mostly grouped by the calendar year they were born in, so kids born in January to June would start the school year with their age 5 more than their grade and finish with their age 6 more than their grade, kids born September to December would start with a difference of 4 and end with a difference of 5, and kids with summer birthdays would have a difference of 5 the entire school year. Under that model, students with early birthdays would turn 15 in the second half of 9th grade, and students with late birthdays would turn 15 in the first half of 10th grade. Students with late birthdays would also start 11th grade at 15. However, some districts group students on an August to July calendar instead of January to December, so everyone starts and ends the school year with the same difference (I’m not sure if it’s 4-5 or 5-6 but that might also depend on the district).
In my school district, you start at age 5, but kids can be as old as 6. That’s kindergarten (so think of it as grade 0). Most kids would be starting 9th grade at 15 or 16.
Some school districts start at 4 and a half. So, 9th grade would start at 14.5 to 15.5.
However, by high school (generally the last 4 years -9th, 10th, 11th and 12th) some schools start mixing grades based on the classes you’re taking: especially math. So, if you were transferring here but come from a more advanced education program, you could end up taking classes with older kids.
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I turned 15 at the very end of 9th grade. So I was 15 for the majority of 10th.
Typically 10th grade.
10th grade. Typically highschool is ages 13-17 or 14-18 years old depending on when you were born relative to your school’s cutoff time
9th or 10th depending on when their birthday is. I have a late birthday, so I turned 15 the summer between 9th and 10th grades.
Considering that a person is 15 for 365 days, which mostly likely do not coincide perfectly with an academic year, it varies.
But the short answer is, generally speaking, 10th.
I was 14 at the start of 9th grade, and then turned 15 at the end and beginning of 10th. So 9th-10th grade depending where in the year your birthday falls. I have a spring birthday.
Generally, subtract 5 from the age to get the grade level. 10th grade.
Many often turn 15 during 9th grade, and generally everyone is starting out 10th grade at 15.
9th and 10th grade (freshman and sophomore years) usually, but can vary depending on where your birthday lands.
I was in 10th grade
10th grade, if they didn’t fail any grades or were accelerated
9th grade, Freshman in high school will usually turn 15 during that year.
They go into their 10th grade, Sophomore year as 15 years old and will turn 16 at some point during the school year.
10th grade generally.
9th or 10th grade, in almost all cases.
Depends on the birthday
Where I live some children begin kindergarten at 4 years old and some at 5 years old, depending on birth month.
So, 15 year olds born earlier in the year will be in 10th grade because they started school at 4 and 15 year olds born later in the year will be in 9th grade because they didn’t start school until they were 5.
9th-10th. You would turn 15 at some point in 9th grade and turn 16 at some point in 10th grade
Sophomore year of high school – 10th grade. Depending on where the cutoff for the grade is and when their birthday is they could also be in 9th (freshman) or 11th (junior).
For example, most school districts near me cut off in the fall (like must be 5 by September 30th to enter kindergarten). I have a friend who was born at the end of September so she was always one of the youngest in her grade. So she was 15 for most of sophomore year and the beginning of junior year.
My birthday is in the spring, so I was 15 before the end of freshman year and 16 before the end of junior year.
I have another friend who was born in November and was always one of the oldest in the grade, so she was 15 for most of freshman year and only stayed 15 for a couple of months at the beginning of sophomore year.
Generally speaking though:
9th grade 14-15;
10th grade 15-16;
11th grade 16-17;
12th grade 17-18
There are definitely outliers however and cutoffs vary from place to place
Most kids are 14 when they start 9th grade and are 15 when they start 10th grade.
9th grade: 14-15yo
10th grade: 15-16yo
11th grade: 16-17yo
12th grade 17-18yo
This is the standard age for the average American. You will see some 13 year olds in 9th grade who were placed into school early or were moved up a grade for good academics. You may see 19 year olds in 12th grade if they were held back or started late.
If you are currently 15 and turned 15 after September 2024 you would be in 9th grade going into 10th grade come next fall based on usual age cut-off dates for American schools. If you are 15 and will be turning 16 before September 2025 you would be in 10th grade going into 11th grade come next fall.
Generally speaking, you are 5 years older than your grade.
9th and 10th. I know I turned 16 in 10th (sophomore) so I would’ve turned 15 in 9th (Freshman). That’s assuming the person hasn’t been held back or skipped any grades.
My birthday is late in the calendar year, but early in the school year. So I turned 15 a few months into 9th grade and stayed that way a few months into 10th
9th/10th depending on when their birthday is.
As a late Jan birthday, it’s right in the middle of the year.
High school is 15 to 18. So most arrive into high school at 14 and their birthday is some time during the year.
15 to start 10th grade. Turn 16 during the year. School years start around August sometime.
I was 15 in the 11th and 16 in the 12th when I graduated.
My son turns 15 soon. He’s a freshman which is 9th grade.
Most will turn 15 during 9th grade. Some during 10th. Depends on when your birthday falls and when the cut-off was when you started school. My birthday was about a week after the cutoff when I started and as a result, I was 15 for the majority of 9th grade.
I turned 15 in the middle of freshman year
Usually turns 15 in 9th.
My son turned 15 about halfway through 9th grade. My birthday was during summer break though, so I didn’t turn 15 until right before 10th grade
9th; freshman year of high school
Late freshman or sophomore.
Standard formula for determining grade… Age minus 5. Works based on the idea that most Americans start kindergarten at five years old. There are exceptions, of course. But generally an 8 year old is in 3rd grade (8-5 = 3), a 16 year old is a junior (16-5 = 11), etc, etc, etc. Most kids start the grade at that age and have the next birthday some time during the school year.
Fun fact, August and September are the most common birth months. Hence why a lot of school districts put their cutoff date at the end of September, even if school starts earlier than that (meaning a handful of kindergartners start at 4 yo, then turn 5 within a couple of weeks). It’s actually for this reason… to maintain the group as being mostly 5 years old, turning 6 some time in the school year.
Most kids are 14 at the beginning of 9th grade and turn 15 during that school year. So for 10th grade, they’re 15 for part of the year and 16 for the rest
10th. I turned 15 a few days before the school year started. My birthday was the cutoff date, everyone who didn’t get held back or skipped forward started 10th at 15 years old.
My 15 year old is a freshman in high school. So 9th
Typically: 9th if your birthday is Jan-May, 10th if June-December.
It depends on what month they were born in. Most people turn 15 in the 9th grade and then start 10th grade at 15.
Where I grew up a kid had to turn 6 by October 31 in order to start first grade. Otherwise you had to wait an extra year.
So a kid turning 15 by 10/31 would be in 10th. A later birthday would make it 9th.
I started my junior year as a 15 year old but had my birthday a few months in.
We usually start K at 5, so typically they would be 15 from part way through 9th until sometime during 10th.
The youngest age for Kindergarten is typically 5 years old. As such, age – 5 years is the grade most students will be in in the fall for their academic career.
There are exceptions, but nearly all students begin Kindergarten at age 5. I only have to mention that exceptions exist because this is reddit.
I was a freshman
9th or 10th
Turns 15 in 9th grade usually if there birthday is in the normal range
For most Americans, they turn 15 either at the end of grade 9 or the start of grade 10. This varies however.
My birthday is late June. I was 15 my entire 10th grade.
They can be in 9th to 11th grade (Freshman to Junior in High School), but are usually in 10th grade (Sophomore in High School)
9th or 10th. Most students start 9th grade at 14 and turn 15 during that year. They start 10th grade at 15 and turn 16 during that year. At least in the state where I’m from. It could depend on the state or even the district.
My daughter will be 16 on Monday and she’s in the 10th grade.
It could be anywhere from 9th to 11th depending on the school district and their age requirements. My school district allowed me to start kindergarten at age 4 because my fifth birthday fell before the cutoff date. I turned 15 during my 10th grade year, and was still 15 when I started 11th.
Compare that to my brother-in-law, who is only a week younger than me. His birthday fell after the cutoff, so he started school a year after I did, meaning he turned 15 during his 9th grade year.
I turned 15 in the last half of 9th grade, so I was also 15 in 10th grade.
My birthday was early in the academic calendar, so I was in 9th grade when I was 15. My classmates were mostly 14 going on 15.
10th / high school sophomore
I was in 9th grade at 15
Most kids go into 9th grade at 14 and usually turn 15 by the end of 9th or during the following summer, then enter 10th grade when they’re 15. The end result is that kids are usually 18 by the time they graduate high school, which is when our country deems them adults (no work restrictions, can vote and sign contracts without parents, etc).
I was 14-15 in freshman year and 15-16 the following
https://www.cde.ca.gov/ci/gs/em/kindergartenfaq.asp#:~:text=Pursuant%20to%20EC%2048000(a,fifth%20birthday%20by%20September%201.
So that age would be like 9th/10th grade in California’s school system.
10-11 depending on birthday. I have a September birthday and was 14 turning 15 at the start of 10th grade.
Most likely to be 10th grade as a 15 year old. Maybe 9th if they repeated a year.
Depends on when their birthday is, of course. In my state, you started 1st grade if you turned 6 before September 2nd 1996
9th or 10th grade in my school district. You start kindergarten at 5 years old, but if your birthday is in the fall you might be a bit older than your classmates depending on the cutoff date.
I turned 15 at the beginning of 10th grade.
Usually 8th or 9th, from my experience (aside from kids that were held back for poor performance or for weird birthdate issues, kids were generally grade+5 years old when starting and grade+6 years old when finishing).
I was in 10th birthday is in the summer so I was 15 the whole sophomore year
Depends what month it is. Could be end of freshman year or it could be sophomore year
My birthday is in July. I was 15 for the entirety of 10th grade.
Depends on when the birthday and the cutoff is. I have a very late birthday, so I was 15 from halfway through 10th grade to halfway through 11th grade. Usually, people turning 15 are in 9th grade (or just before it), the summer before 10th, or in my state under prior cutoff rules, early 10th grade.
I was a freshman (9th grade) when I was 15. My parents tried to get me into kindergarten a year early because I was born around the cut off date but I failed the kindergarten screening.
In Maine the cut off date is in October.
10th
9th or 10th depending on their birthday
9/10 in the United States
I was 15 for the end of 9th grade and the beginning of 10th.
9 and 10. I have one right now.
I was 15 but it’s pretty common to be 14. My wife is a year younger than me but graduated the same year
Year 9/10 usually
Like others said, it depends on when your birthday is. Mine is in December, so I turned 15 in the first semester of 9th grade.
I don’t remember what the cutoff date was when I started, but I was older than the majority of my classmates. As a result, I was also the first of my friend group to be licensed to drive solo. I was very popular for rides, at least for a few months 😂
Most people are 18 by the spring of their 12th grade year. Working backwards from that gives you a good idea of ages.
Often 10th grade
9th-10th.
10th (they would I normally turn 15 during 9th grade or the summer before 10th)
Should be 9th or 10th grade depending…. For example I turned 15 the last 2 weeks of my 9th grade year and then was 15 entering and most of 10th grade. But I had friends that turned 15 the beginning of 9th grade year.
15-5= 10 … 4 being avg age of kindergarten, then +/- 1, so 9-10-11 grade. Depends on when birthday is & whether it’s Jan-May (end of school yr) or Sept-Dec (start of school yr).
Sophomore usually
9th (and then 10th).
I turned 15 during 9th grade. This is common.
I would say 10th grade. There are going to be exceptions. When I was middle school, I lived in an area where it was not uncommon for students to be held back, so by eighth grade I had a handful of 15-year-old classmates. When I was in high school, we had moved to an area that had a much earlier cutoff date. A lot of my classmates had autumn birthdays, so by the end of the first semester of 10th grade, a significant portion of my class was already 16. And I think I only knew of a couple people that had been held back – it was way less common in that school district.
Usually kids turn 15 in 9th grade. In a few states, they could turn 15 in the beginning of 10th grade.
Freshman or sophomore depending on the birthday cut off
I was a Junior (11th) when I was 15. That’s because my birthday is in September and school always started the day after Labor Day.
9th or 10th most likely. But depending on the impact of the flu year and their schooling was impacted, 8th grade is a possibility too
Depends on whether or not they were born early or late in the year.
9th Grade (Freshman): 14–15 years old
10th Grade (Sophomore): 15–16 years old
11th Grade (Junior): 16–17 years old
12th Grade (Senior): 17–18 years old
My birthday is in November (later in the year) so I turned 15 in my sophomore year of high school.
9th for sure
Very simple way to estimate a child’s age (1st – 12th grade). If you know what grade they are in and it is sometime between July and December, then add their grade to 5. If it is sometime between January and June add 1 on top of that. The way this math works is that the majority of kids in the U.S. start first grade at 5 years old. So if they are in seventh grade and it’s October, they are most likely 12 (5+7). Now, once you get past December, you have less than half of the birthdays left in a school year. So that’s why if it’s march, then you would guess 13 for a seventh grader and you would probably be right.
My birthday fell funny, so I was older than most of my cohort. I turned 15 just a couple of months after 9th grade started. I was already 18.5 when I graduated high school.
9th or 10th grade
Late freshman-early sophomore
9th or 10th usually. Possibly 8th grade, if the child got held back, or 11th grade, due to a late cut off date.
Was 15 for the back half of 10th grade and 1st half of 11th grade (December birthday, right before the cutoff)
7th
9th
Probably 9th
9th or 10th depending on what time of the year and what month their birthday’s in. Mine’s December, so I was 15 for most of 9th grade.
i’m pretty sure it’s 9th.
I was a 15 year old freshman
Could be 9th or 10th but it’s not always clear cut. Lots of kids get held back or skipped ahead depending on their academic skill level.
Depends on the state’s cutoff date for birthdays, too. California’s cutoff is December 1, but when I lived in Colorado, their cutoff was September 15.
14
Kindergarten is at five, 1st at six, count up from there.
9th or 10th. More uncommonly 8th or 11th.
9th or 10th in my experience, depending on when their birthday falls. I believe the birthday cutoff for my state/district for public schooling is September 1st.
It depends on the state. Lol
It varies due to the way the school years are and how what time of year a child was born in, but usually if a kid started at the normal age and has not failed, they will turn 15 during their 9th grade of school. Which we call Freshman Year.
9th
9th grade going into 10th
I was in 10th
9th or 10th depending on when their birthday is. I turned 15 the first week of 10th grade.
They’d typically be a freshman in high school (9th grade) or a sophomore (10th grade) unless they flunked a grade like my husband or were bumped up a grade like they wanted to do to me lol
Mine kids all turned 15 shortly before starting 10 grade
9th or 10th
My birthday is in September. I started high school at 13 because school starts in August. I was 15 in the 10th grade. They actually changed the rules and my mom had to fight for me to start school.
I was a 16 year old senior. Lots of 16-17 year olds in my graduating class.
Typically though, Freshman/Grade 9: ages 14-15. Sophomore, Grade 10: 15-16. Junior, Grade 11: 16-17. Senior, Grade 12: 17-18.
Between freshman and sophomore
9th grade and 10th grade
I turned 15 my freshman year of high school
10th
You turn 15 in 9th grade most of the time and then are 15 at the start of 10th grade. Of course it depends on birthday/school year but in general that’s how it is.
9th or 10th
Freshman or Sophomore in high school.
When I attended school you had to turn 6 by December 1 to attend first grade. But its October 1 now.
9th or 10th, depending on when in the year they were born.
The average 15 yeat old is in either 9th or 10th grade. Ot depends on various factors including what month they were born.
9th or 10th
I was just turned 13 when I started 9th grade, but I started school early. Most kids start kindergarten if they are 5 before Sept., so most are 14 turning 15 in 9th. I turned 17 a couple months before I graduated, & was almost the youngest student on campus when I started college at a small private university that fall. (The youngest was a 16-yr-old British guy.)
So a 15 yr. old is likely either in the spring term of 9th grade, or the fall term of 10th grade.
9 and 10
I was in 10th grade.
Depends on the school district. Where I went to school, kids were mostly grouped by the calendar year they were born in, so kids born in January to June would start the school year with their age 5 more than their grade and finish with their age 6 more than their grade, kids born September to December would start with a difference of 4 and end with a difference of 5, and kids with summer birthdays would have a difference of 5 the entire school year. Under that model, students with early birthdays would turn 15 in the second half of 9th grade, and students with late birthdays would turn 15 in the first half of 10th grade. Students with late birthdays would also start 11th grade at 15. However, some districts group students on an August to July calendar instead of January to December, so everyone starts and ends the school year with the same difference (I’m not sure if it’s 4-5 or 5-6 but that might also depend on the district).
I was in 9th and 10th grade
10/11 or “sophomore” in high school.
They would be a 9th grader or 10th grader.
9th or 10th
I was held back a year, so I was 15 and turned 16 in the 9th grade, but I was age-peers with the 10th graders.
In my school district, you start at age 5, but kids can be as old as 6. That’s kindergarten (so think of it as grade 0). Most kids would be starting 9th grade at 15 or 16.
Some school districts start at 4 and a half. So, 9th grade would start at 14.5 to 15.5.
However, by high school (generally the last 4 years -9th, 10th, 11th and 12th) some schools start mixing grades based on the classes you’re taking: especially math. So, if you were transferring here but come from a more advanced education program, you could end up taking classes with older kids.
This question is kinda sus
10th
9th/10th (freshman/sophomore)
Typically 10th grade, or Sophomore year.
9th or 10th
9-10th grade, aka the freshman and sophomore years of high school.