There are more than 400 high schools in Maryland (public and private). Below are the 25 largest in Maryland by enrollment as we head into the new year. The statistics come from the 2026 Niche list of the largest schools in Maryland obtained from the U.S. Department of Education, representing the most recent data available, as self-reported by the schools.
The list below includes school name, county in Maryland, enrollment number, student-teacher ratio, and the school’s grade according to Niche. Montgomery County schools account for ten of the 25 schools and are listed in bold.
25. Dundalk High School, Baltimore County, 2,159, 16:1, C.
24. Broadneck High School, Anne Arundel County, 2,172, 19:1, A.
23. Laurel High School, Prince George’s County, 2,179, 18:1, C.
22. Winston Churchill High School, Montgomery County, 2,203, 18:1, A+
21. Clarksburg High School, Montgomery County, 2,214, 16:1, A.
20. Dr. Henry A Wise Jr. High School, Prince George’s County, 2,270, 19:1, C.
19. Meade High School, Anne Arundel County, 2,349, 17:1, B-.
18. Bethesda-Chevy Chase High School, Montgomery County, 2,369, 17:1, A+.
17. Northwestern High School, Prince George’s High School, 2,381, 17:1, C.
16. Seneca Valley High School, Montgomery County, 2,386, 15:1, A-.
15. Richard Montgomery High School, Montgomery County, 2,386, 17:1, A+.
14. Northwest High School, Montgomery County, 2,386, 17:1, A+.
13. Glen Burnie High School, Anne Arundel, 2,391, 17:1, B.
12. Gaithersburg High School, Montgomery County, 2,454, 14:1, B+.
11. Duval High School, Prince George’s County, 2,484, 19:1, C+.
10. Old Mill High School, Anne Arundel County, 2,489, 17:1, B+.
9. North County High School, Anne Arundel County, 2,507, 17:1, B.
8. Bowie High School, Prince George’s County, 2,534, 19:1, B-.
7. Eleanor Roosevelt High School, Prince George’s County, 2,557, 21:1, A.
6. Parkdale High School, Prince George’s County, 2,571, 17:1, C.
5. Wheaton High School, Montgomery County, 2,747, 16:1, A.
4. Charles Herbert Flowers High School, Prince George’s County, 2,779, 22:1, B-.
3. High Point High School, Prince George’s County, 2960, 18:1, C-.
2. Walter Johnson High School, Montgomery County, 2,984, 19:1, A+.
1. Montgomery Blair High School, Montgomery County, 3,261, 17:1, A+.
