How Old Are Kids in Each Grade? Complete Age-to-Grade Chart

Most 6th graders are 11 to 12 years old, 10-year-olds are typically in 4th or 5th grade, and middle school spans grades 6 through 8 for students aged 11 to 14. In the US education system, elementary school covers grades 1 through 5 (ages 6 to 11), whilst high school includes grades 9 through 12 (ages 14 to 18). This guide provides the exact age ranges for each grade level, helping parents understand school stages and make informed decisions about their child's education.

How the US Grade System Works by Age

The American education system organises students into age-based grades. Elementary school (grades 1–5) serves children aged 6 to 11. Middle school (grades 6–8) serves children aged 11 to 14. High school (grades 9–12) serves children aged 14 to 18. Pre-K and Kindergarten serve younger children aged 3 to 6.

Most children in the same grade are within one year of each other in age due to school cutoff dates. According to research from the National Center for Education Statistics, cutoff dates typically fall between August and October, meaning a child born in September might enter kindergarten at age 4 in one state but wait until age 5 in another.

What Grade Is a 10 Year Old and Age to Grade Converter

A 10-year-old is typically in 4th or 5th grade. Use this table to find your child's likely grade by age:

Individual placement depends on birth dates and school cutoff policies. Some children may be a year older or younger than the typical age for their grade due to grade skipping, grade retention, or late school entry.

Elementary School Age and Grade Levels

Elementary school covers grades 1 through 5. First graders are 6 to 7 years old. Second graders are 7 to 8 years old. Third graders are 8 to 9 years old. Fourth graders are 9 to 10 years old. Fifth graders are 10 to 11 years old.

If you're wondering what grade is a 10 year old in, the answer is 4th or 5th grade depending on their birthday. According to DreamBox Learning's comprehensive age guide, elementary school focuses on foundational skills in reading, writing, and mathematics.

What Grade Is Middle School and How Old Are 6th Graders

Middle school includes grades 6, 7, and 8. Sixth graders are 11 to 12 years old. Seventh graders are 12 to 13 years old. Eighth graders are 13 to 14 years old.

What grade is middle school? It's grades 6 through 8. According to Your Teen Magazine's school transition guide, this period introduces more complex academics, multiple teachers, and increased social dynamics. How old are 6th graders? They are typically 11 to 12 years old, marking the transition from elementary to secondary education.

What Grade Is High School and What Age Is 11th Grade

High school includes grades 9, 10, 11, and 12. Ninth graders (freshmen) are 14 to 15 years old. Tenth graders (sophomores) are 15 to 16 years old. Eleventh graders (juniors) are 16 to 17 years old. Twelfth graders (seniors) are 17 to 18 years old.

What grade is high school? It's grades 9 through 12. What age is 11th grade? Students in 11th grade are 16 to 17 years old. According to the College Board's educational standards, high school is where academic performance matters significantly for university admissions, with many students taking Advanced Placement (AP) courses in grades 11 and 12.

Kindergarten Age and When Do Kids Start School

Kindergarten serves children aged 5 to 6 years old. Pre-K serves children aged 4 to 5 years old. When do kids start school? Formal schooling typically begins at age 5 with kindergarten entry.

Most states require children to turn 5 by a specific cutoff date, usually between August 1st and October 1st, to enter kindergarten that year. According to the American Academy of Pediatrics' school readiness guidelines, school readiness involves academic, social, and emotional dimensions beyond just age.

Grade Placement by Birthday and School Cutoff Dates

Grade placement by birthday determines which grade your child enters. Most schools use September 1st as the kindergarten cutoff date. Some states use August 1st, whilst others use October 1st. A child born in September might enter kindergarten at age 4 in one state but wait until age 5 in another.

According to research from Child Mind Institute on school readiness, being the youngest or oldest in a grade can affect academic performance, social development, and athletic ability, particularly in early grades.

Some parents consider redshirting, which means delaying school entry by one year. Others request early entry if their child demonstrates advanced readiness. According to Understood.org's guide to grade placement decisions, schools have varying policies on these requests, decided on a case-by-case basis.

Grade Skipping and Grade Retention Explained

Grade skipping occurs when a student advances more than one grade level due to exceptional academic ability. A child who skips a grade will be younger than classmates, which can affect social and emotional development.

Grade retention occurs when a student repeats a grade. Schools may recommend retention when a student has not mastered essential skills needed for the next grade level. According to research from the Learning Policy Institute, retention can provide additional time and support some students need to build a stronger foundation, though it requires careful consideration of individual needs.

International Schools Using the US Grade System

Thousands of international schools across Southeast Asia and East Asia follow the US grading system. These schools serve students from Pre-K through 12th grade with the same age-based progression outlined in this guide.

The following table showcases verified international schools from the doris directory that use the American curriculum with US grading systems. All school names are hyperlinked to their full profiles.

Frequently Asked Questions

Q: How old are 6th graders?
A: Sixth graders are 11 to 12 years old and typically begin middle school.

Q: What grade is a 10 year old in?
A 10-year-old is usually in 4th or 5th grade, depending on their birthday and school cutoff date.

Q: What grade is middle school?
A: Middle school includes grades 6, 7, and 8, serving students aged 11 to 14.

Q: When do kids start school?
A: Children typically start kindergarten at age 5. Many attend Pre-K at ages 4 to 5 before kindergarten.

Q: What grade is high school?
A: High school includes grades 9, 10, 11, and 12, serving students aged 14 to 18.

doris is a free, impartial international school discovery platform designed to help parents find the right international school for their children worldwide. Every school profile includes fees, curriculum, admissions, pupil numbers and more. Parents can compare schools, contact schools directly, access expert parent guides, and connect with a community of parents around the world. Start your search at doris.school.

This guide was written by Aditya, part of the doris editorial team. doris sources school data from institutions worldwide and speaks directly with parents navigating the school search process. Schools are listed for informational purposes only. doris does not rank or promote any school.