Listed below are counties with the largest average student size (2025).
The county with largest average public school student size is Oneida County, ID with 1,451 students. The county with smallest average public school student size is Golden Valley County, MT with 23 students.
Student Size Range: 183
752
Avg. Student Size: 512
Largest Public School Student Size By County (2025)
County
Average School Size
Largest Schools (# of Students)
Rank: #11.
1,451 students
Rank: #22.
1,264 students
Rank: #33.
1,251 students
Rank: #44.
1,125 students
Rank: #55.
1,113 students
Rank: #66.
1,107 students
Rank: #77.
1,104 students
Rank: #8-98-9.
1,071 students
Rank: #8-98-9.
1,071 students
Rank: #1010.
1,054 students
Rank: #1111.
1,050 students
Rank: #1212.
1,038 students
Rank: #1313.
1,037 students
Rank: #1414.
1,016 students
Rank: #1515.
986 students
Rank: #1616.
985 students
Rank: #1717.
979 students
Rank: #1818.
978 students
Rank: #1919.
963 students
Frequently Asked Questions
What counties have the public schools with the largest student size?
The counties with the largest student size are Oneida County, ID (1,451 students average student size), Forsyth County, GA (1,264 students average student size) and Gwinnett County, GA (1,251 students average student size).
Recent Articles
Parents’ Guide to Special Education
Special education law is not easy to decipher, with several regulations that govern special education services for disabled students. In this article, learn about the core components of the laws, rights, and individual education plans that can help create the best public school environment for your child.
Surveillance Cameras: Violation of Rights or Improved Security?
A school district in Virginia has given the green light to schools that want to install surveillance cameras in common areas like cafeterias and hallways. We’ll look at whether this is a violation of student privacy or the best way to keep order in schools.
Teachers in 19 States Allowed to Physically Punish Students
As of 2014, nineteen states still allow corporal punishment – spanking and paddling the most common choices – in their public schools. However, some argue that not only are these punishments physically harmful, they also are disproportionately administered to students of color. As a result, House democrats have taken up the issue in a new bill that would ban all forms of corporal punishment nationwide.