Great Mills High School is a comprehensive public high school in Great Mills, Maryland, United States. It serves students in grades 9–12 in the mixed rural and suburban area at the confluence of the Potomac River, Patuxent River, and Chesapeake Bay.
Serving 1,748 students in grades 9-12, Great Mills High School ranks in the top 50% of all schools in Maryland for overall test scores (math proficiency is top 30%, and reading proficiency is top 30%).
The percentage of students achieving proficiency in math is 35% (which is higher than the Maryland state average of 25%). The percentage of students achieving proficiency in reading/language arts is 55% (which is higher than the Maryland state average of 45%).
The student:teacher ratio of 19:1 is higher than the Maryland state level of 14:1.
Minority enrollment is 66% of the student body (majority Black), which is lower than the Maryland state average of 68% (majority Black).
Quick Stats (2025)
- Grades: 9-12
- Enrollment: 1,748 students
- Student:Teacher Ratio: 19:1
- Minority Enrollment: 66%
- Graduation Rate: 83% (Btm 50% in MD)
- Overall Testing Rank: Top 50%
- Math Proficiency: 35% (Top 30%)
- Reading Proficiency: 55% (Top 50%)
- Science Proficiency: 35% (Top 50%)
- Source: National Center for Education Statistics (NCES), MD Dept. of Education
Top Rankings
Great Mills High School ranks among the top 20% of public schools in Maryland for:
Category
Attribute
Diversity
School Overview
Great Mills High School's student population of 1,748 students has stayed relatively flat over five school years.
The teacher population of 91 teachers has grown by 7% over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
1,748 students
Gender %
Total Classroom Teachers
91 teachers
Year Founded
1929
Colors
Green, Gold
School Rankings
Great Mills High School ranks within the top 50% of all 1,347 schools in Maryland (based off of combined math and reading proficiency testing data).
The diversity score of Great Mills High School is 0.71, which is less than the diversity score at state average of 0.74. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#418 out of 1347 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
35%
25%
Reading/Language Arts Test Scores (% Proficient)
55%
45%
Science Test Scores (% Proficient)
35%
36%
Student : Teacher Ratio
19:1
14:1
American Indian
n/a
n/a
Asian
3%
7%
Hispanic
14%
23%
Black
38%
33%
White
34%
32%
Hawaiian
n/a
n/a
Two or more races
11%
5%
All Ethnic Groups
Graduation Rate
83%
86%
Participates in the National School Lunch Program (NSLP)
Yes
Eligible for Free Lunch
49%
44%
Eligible for Reduced Lunch
7%
5%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), MD Dept. of Education
School Notes
- School Mascot: Hornet
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Great Mills High School's ranking?
Great Mills High School is ranked #418 out of 1,347 schools, which ranks it among the top 50% of public schools in Maryland.
What schools are Great Mills High School often compared to?
Great Mills High Schoolis often viewed alongside schools like Leonardtown High School, Chopticon High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
35% of students have achieved math proficiency (compared to the 25% MD state average), while 55% of students have achieved reading proficiency (compared to the 45% MD state average).
What is the graduation rate of Great Mills High School?
The graduation rate of Great Mills High School is 83%, which is lower than the Maryland state average of 86%.
How many students attend Great Mills High School?
1,748 students attend Great Mills High School.
What is the racial composition of the student body?
38% of Great Mills High School students are Black, 34% of students are White, 14% of students are Hispanic, 11% of students are Two or more races, and 3% of students are Asian.
What is the student:teacher ratio of Great Mills High School?
Great Mills High School has a student ration of 19:1, which is higher than the Maryland state average of 14:1.
What grades does Great Mills High School offer ?
Great Mills High School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Great Mills High School part of?
Great Mills High School is part of St. Mary's County School District.
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