Enrollment
703
Maryland · 2024-25 NCES data
Other / mixed grade configuration · Mt Airy, MD
Federal NCES profile for Twin Ridge Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 41/100.
The verdict
Twin Ridge Elementary earns 41/100 on the Resource Investment Index, with class sizes larger than 94% of Maryland schools.
Twin Ridge Elementary has class sizes larger than 94% of Maryland schools. Computed live against every Maryland school reporting to NCES.
NCES ID 240033000159 Verify on NCES CCD record →
Enrollment
703
Maryland · 2024-25 NCES data
Teachers (FTE)
37.0
Federal CCD staff survey
Students per teacher
19:1
vs 14.5:1 Maryland avg
+31% vs state
Free-lunch eligible
17.0%
vs 49.0% Maryland avg
-65% vs state
How Twin Ridge Elementary compares with Maryland and U.S. medians
Larger classes than state median
19:1 - 4.5 above the Maryland state median of 14.5:1, indicating larger average class loads than typical schools in the state.
Twin Ridge Elementary is a lower-poverty, mid-sized combined-grade school in Mt Airy, Maryland, enrolling 703 students.
Class loads run heavy: 19:1 is larger than about 94% of Maryland schools and 31% above the 14.5:1 state mean, so each teacher carries more students than is typical.
Comparatively few students face economic hardship here, 17.0% free-meal eligibility runs 65% below the Maryland average.
Enrollment of 703 puts it in the larger third of Maryland schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 1,382 scored Maryland schools.
Among 219 similarly sized, similarly resourced-need Maryland schools statewide, it ranks #159, in the lower tier once campus size and economic need are matched.
Its student body is led by White (76%) and Hispanic or Latino (10%) (diversity index 40/100).
Counselor availability sits well past the ASCA benchmark, roughly 352 students sharing each counselor, though short of the most stretched campuses.
Attendance runs somewhat below the norm, with 23.8% of students chronically absent per the 2021-22 civil-rights collection.
The surrounding Frederick County Public Schools spends $14,981 per pupil, 27% below the Maryland average, a leaner-resourced district than most.
Among Mt Airy's public schools, it stands alongside Parr's Ridge Elementary (391 students): Twin Ridge Elementary is larger than that campus by headcount and runs heavier classes (19:1 vs 13.5:1).
Frederick County Public Schools also operates Gov. Thomas Johnson High (2,066 students) and Urbana High (1,989 students) alongside Twin Ridge Elementary.
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
Twin Ridge Elementary on the metrics families compare, against Maryland and U.S. means.
| Metric | This school | vs Maryland | Maryland avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 19:1 | ▲ 31% | 14.5:1 | 15.7:1 |
| Free-lunch eligible | 17.0% | ▼ 65% | 49.0% | 51.7% |
| Enrollment | 703 | top 29% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
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.
Largest group: White at 76.1% of enrollment.
Simpson diversity index - at 40.3, Twin Ridge Elementary is less mixed than the Maryland school average of 52.3.
District-wide per-pupil expenditure for Frederick County Public Schools, which includes Twin Ridge Elementary.
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.
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Gov. Thomas Johnson High | Larger | Higher economic need | Similar S:T ratio |
| Urbana High | Larger | Similar economic need | Higher S:T ratio |
| Frederick High | Larger | Higher economic need | Similar S:T ratio |
| Tuscarora High | Larger | Higher economic need | Similar S:T ratio |
| Oakdale High | Larger | Similar economic need | Higher S:T ratio |
Comparisons are relative to Twin Ridge Elementary's own figures; each column derives from NCES Common Core of Data.
1 comparable other schools (grades Mixed) serving the same city.
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.
Next steps
Verify locally before acting on Twin Ridge Elementary's federal record.
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.
Twin Ridge Elementary has 703 students enrolled. It is a public school in Mt Airy, MD.
The student-teacher ratio at Twin Ridge Elementary is 19:1, which is 31% higher than the Maryland average of 14.5:1 and 21% higher than the national average of 15.7:1.
17.0% of students at Twin Ridge Elementary are eligible for free lunch, compared to the Maryland average of 49.0%.
The largest demographic group at Twin Ridge Elementary is White at 76.1% of enrollment, in Mt Airy, MD.
Twin Ridge Elementary has a Resource Investment Index of 41/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
Twin Ridge Elementary earns 41/100 on the Resource Investment Index, with class sizes larger than 94% of Maryland schools. 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.
Besides Twin Ridge Elementary, Frederick County Public Schools also operates Gov. Thomas Johnson High (2,066 students), Urbana High (1,989 students), and Frederick High (1,821 students). See the Frederick County Public Schools district page for the complete list.
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.
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Last updated:
PlainSchools, “Twin Ridge Elementary, Mt Airy MD.” Compiled from NCES Common Core of Data, Civil Rights Data Collection, and the NCES F-33 finance survey; data as of June 2026. https://plainschools.com/schools/twin-ridge-elementary-md
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