Enrollment
1,697
Maryland · 2024-25 NCES data
High school (grades 9-12) · Great Mills, MD
Great Mills High
Federal NCES profile for Great Mills High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 46/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 240060001224
👥 S:T ratio 26
📚 AP courses 100
🌟 Gifted program 70
🎓 Counselors 32
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Great Mills High earns 46/100 on the Resource Investment Index, with class sizes larger than 93% of Maryland schools. It is also one of the largest schools in Maryland.
- #3 of 3
- public schools in Great Mills · Resource Index
- 46
- Resource Index · Typical
- 18.6:1
- large classes for Maryland
- 50.9%
- free-lunch eligible
Great Mills High has class sizes larger than 93% of Maryland schools. Computed live against every Maryland school reporting to NCES.
By Resource Investment Index, Great Mills High ranks #3 of 3 public schools in Great Mills, MD.
School address
District: St. Mary's County Public Schools · Maryland
NCES ID 240060001224 Verify on NCES CCD record →
Teachers (FTE)
91.0
Federal CCD staff survey
Students per teacher
18.6:1
vs 14.5:1 Maryland avg
+28% vs state
Free-lunch eligible
50.9%
vs 49.0% Maryland avg
+4% vs state
Student-teacher ratio in context
How Great Mills High compares with Maryland and U.S. medians
What stands out at Great Mills High
Great Mills High is a higher-need, large high school in Great Mills, Maryland, enrolling 1,697 students.
Class loads run heavy: 18.6:1 is larger than about 93% of Maryland schools and 28% above the 14.5:1 state mean, so each teacher carries more students than is typical.
Its free-meal eligibility rate of 50.9% lands close to the Maryland typical range, neither a high- nor low-need campus by this measure.
By headcount it is one of the larger campuses in Maryland, bigger than 96% of state schools at 1,697 students.
Its Resource Investment Index lands in the lower third of 1,382 scored Maryland schools.
Among 82 similarly sized, similarly resourced-need Maryland schools statewide, it ranks #64, in the lower tier once campus size and economic need are matched.
Its student body is led by African American (38%) and White (34%) (diversity index 71/100).
On the academic-pipeline side it reports 29 Advanced Placement courses.
Counselor availability sits well past the ASCA benchmark, roughly 339 students sharing each counselor, though short of the most stretched campuses.
Chronic absenteeism is elevated: 42.0% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding St. Mary's County Public Schools spends $16,038 per pupil, 22% below the Maryland average, a leaner-resourced district than most.
St. Mary's County Public Schools also operates Leonardtown High (2,118 students) and Chopticon High (1,526 students) alongside Great Mills High.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Great Mills High compares
Great Mills High on the metrics families compare, against Maryland and U.S. means.
| Metric | This school | vs Maryland | Maryland avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 18.6:1 | ▲ 28% | 14.5:1 | 15.7:1 |
| Free-lunch eligible | 50.9% | ▲ 4% | 49.0% | 51.7% |
| Enrollment | 1,697 | top 4% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
18.6:1
Leaner classes than 22% of US schools, heavier class loads than most.
1,697
Bigger than 97% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
50.9%
free-lunch eligible
- 4% above the Maryland average of 49.0%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
18.6:1
students per teacher
- 28% above state mean
Top 93% in Maryland - lower ratio than 7% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
42.0%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$16,038
per pupil, district-wide
- below Maryland avg of $20,446
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors5.0 FTE
Per 339 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 223 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 13.1 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
African American 37.8%
White 34.4%
Hispanic or Latino 14.0%
Two or More 10.3%
Asian 2.9%
American Indian / Alaska Native 0.5%
Native Hawaiian / Pacific Islander 0.1%
Largest group: African American at 37.8% of enrollment.
Student-body diversity index 70.8/100
Simpson diversity index - at 70.8, Great Mills High is more mixed than the Maryland school average of 52.3.
Programs
AP courses offered 29
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for St. Mary's County Public Schools, which includes Great Mills High.
$16,038
Per student
-22%
vs Maryland
Avg $20,446
-3%
vs U.S.
Avg $16,593
Revenue mix
Local 45.1%
State 41.2%
Federal 13.6%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Great Mills High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Leonardtown High | Similar size | Lower economic need | Higher S:T ratio |
| Chopticon High | Similar size | Lower economic need | Similar S:T ratio |
| Leonardtown Middle | Smaller | Lower economic need | Similar S:T ratio |
| Spring Ridge Middle | Smaller | Similar economic need | Lower S:T ratio |
| Margaret Brent Middle | Smaller | Lower economic need | Lower S:T ratio |
Comparisons are relative to Great Mills High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,118
- Students per teacher
- 23.5:1
- Resource Index
- 32/100
- Enrollment
- 1,526
- Students per teacher
- 19.1:1
- Resource Index
- 35/100
- Enrollment
- 969
- Students per teacher
- 17.6:1
- Resource Index
- 43/100
- Enrollment
- 913
- Students per teacher
- 15:1
- Resource Index
- 37/100
- Enrollment
- 878
- Students per teacher
- 16.6:1
- Resource Index
- 42/100
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of Maryland, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~1,697 students)
Similar student-teacher ratio (~18.6:1)
Next steps
Verify locally before acting on Great Mills High's federal record.
- Compare Great Mills High against another school. Compare schools
- St. Mary's County Public Schools's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Great Mills High
How many students attend Great Mills High?
Great Mills High has 1,697 students enrolled. It is a high school in Great Mills, MD.
What is the student-teacher ratio at Great Mills High?
The student-teacher ratio at Great Mills High is 18.6:1, which is 28% higher than the Maryland average of 14.5:1 and 18% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Great Mills High?
50.9% of students at Great Mills High are eligible for free lunch, compared to the Maryland average of 49.0%.
What is the racial and ethnic makeup of Great Mills High?
The largest demographic group at Great Mills High is African American at 37.8% of enrollment, in Great Mills, MD. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 70.8/100.
What is the Resource Investment Index for Great Mills High?
Great Mills High has a Resource Investment Index of 46/100 (typical reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Great Mills High rank among public schools in Great Mills?
By Resource Investment Index, Great Mills High ranks #3 of 3 public schools in Great Mills, MD. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Great Mills on the city page.
Is Great Mills High a good school?
Great Mills High earns 46/100 on the Resource Investment Index, with class sizes larger than 93% of Maryland schools. It is also one of the largest schools in Maryland. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in St. Mary's County Public Schools?
Besides Great Mills High, St. Mary's County Public Schools also operates Leonardtown High (2,118 students), Chopticon High (1,526 students), and Leonardtown Middle (969 students). See the St. Mary's County Public Schools district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.