Enrollment
365
Connecticut · 2024-25 NCES data
Other / mixed grade configuration · Branford, CT
Federal NCES profile for Mary R. Tisko School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 55/100.
The verdict
Mary R. Tisko School earns 55/100 on the Resource Investment Index, with class sizes near the Connecticut median.
Mary R. Tisko School has class sizes near the Connecticut median. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, Mary R. Tisko School ranks #1 of 3 schools in Branford, CT.
NCES ID 090042000043 Verify on NCES CCD record →
Enrollment
365
Connecticut · 2024-25 NCES data
Teachers (FTE)
29.0
Federal CCD staff survey
Students per teacher
12.6:1
vs 12.1:1 Connecticut avg
+4% vs state
Free-lunch eligible
16.8%
vs 36.4% Connecticut avg
-54% vs state
How Mary R. Tisko School compares with Connecticut and U.S. medians
Slightly above state median
12.6:1 - 0.5 above the Connecticut state median of 12.1:1, indicating larger average class loads than typical schools in the state.
Mary R. Tisko School is a lower-poverty, mid-sized combined-grade school in Branford, Connecticut, enrolling 365 students.
Class loads run somewhat heavier than typical: 12.6:1 puts it in the larger third of Connecticut schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 16.8% of students eligible for free meals.
With 365 students, its enrollment sits close to the Connecticut median campus size.
Its Resource Investment Index lands in the upper third of 1,003 scored Connecticut schools.
Against 276 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #110.
Its student body is predominantly White (82% of enrollment) (diversity index 31/100).
Attendance holds up well here: only 5.8% of students were chronically absent, below the typical post-pandemic national figure.
Among Branford's public schools, it stands alongside Mary T. Murphy School (318 students): Mary R. Tisko School is larger than that campus by headcount and runs heavier classes (12.6:1 vs 8.8:1).
Branford School District also operates Francis Walsh Intermediate School (775 students) and Branford High School (738 students) alongside Mary R. Tisko School.
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
Mary R. Tisko School on the metrics families compare, against Connecticut and U.S. means.
| Metric | This school | vs Connecticut | Connecticut avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 12.6:1 | ▲ 4% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 16.8% | ▼ 54% | 36.4% | 51.7% |
| Enrollment | 365 | top 60% | - | - |
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 81.9% of enrollment.
Simpson diversity index - at 31.4, Mary R. Tisko School is less mixed than the Connecticut school average of 50.5.
District-wide per-pupil expenditure for Branford School District, which includes Mary R. Tisko School.
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 |
|---|---|---|---|
| Francis Walsh Intermediate School | Larger | Higher economic need | Lower S:T ratio |
| Branford High School | Larger | Higher economic need | Lower S:T ratio |
| Mary T. Murphy School | Similar size | Higher economic need | Lower S:T ratio |
| John B. Sliney School | Smaller | Higher economic need | Lower S:T ratio |
Comparisons are relative to Mary R. Tisko School's own figures; each column derives from NCES Common Core of Data.
2 comparable other schools (grades Mixed) serving the same city.
Matched by enrollment size and by staffing ratio across all of Connecticut, not just this city - a different peer set than the local comparisons above.
Next steps
Verify locally before acting on Mary R. Tisko School'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.
Mary R. Tisko School has 365 students enrolled. It is a public school in Branford, CT.
The student-teacher ratio at Mary R. Tisko School is 12.6:1, which is 4% higher than the Connecticut average of 12.1:1 and 20% lower than the national average of 15.7:1.
16.8% of students at Mary R. Tisko School are eligible for free lunch, compared to the Connecticut average of 36.4%.
The largest demographic group at Mary R. Tisko School is White at 81.9% of enrollment, in Branford, CT.
Mary R. Tisko School has a Resource Investment Index of 55/100 (higher reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
By Resource Investment Index, Mary R. Tisko School ranks #1 of 3 schools in Branford, CT. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Branford on the city page.
Mary R. Tisko School earns 55/100 on the Resource Investment Index, with class sizes near the Connecticut median. 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 Mary R. Tisko School, Branford School District also operates Francis Walsh Intermediate School (775 students), Branford High School (738 students), and Mary T. Murphy School (318 students). See the Branford School District 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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PlainSchools, “Mary R. Tisko School, Branford CT.” 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/mary-r-tisko-school-ct
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