- Enrollment
- 3,983
- Students per teacher
- 18.9:1
- Resource Index
- 24/100
Middle school (grades 6-8) · Brooklyn, NY
Jhs 78 Roy H Mann
Federal NCES profile for Jhs 78 Roy H Mann, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 20/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 360015302007
👥 S:T ratio 32
📋 Attendance 8
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Jhs 78 Roy H Mann earns 20/100 on the Resource Investment Index, with class sizes larger than 94% of New York schools. It is also more racially and ethnically mixed than most New York schools.
- #93 of 94
- middle schools in Brooklyn · Resource Index
- 20
- Resource Index · Lower
- 17:1
- large classes for New York
- 68.6%
- free-lunch eligible
Jhs 78 Roy H Mann has class sizes larger than 94% of New York schools. Computed live against every New York school reporting to NCES.
By Resource Investment Index, Jhs 78 Roy H Mann ranks #93 of 94 middle schools in Brooklyn, NY.
School address
District: New York City Geographic District #22 · New York
NCES ID 360015302007 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+39 students YoY
Jhs 78 Roy H Mann grew from 542 students in 2022-23 to 581 in 2023-24 (+7.2%).
Teacher FTE added 39.0 → 41.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Growing CCD campus
+39 students YoY 360015302007 · Brooklyn, NY Middle · MID · TRAD
662 enr · 17:1 · 68.6% lunch · RII 20
Nearest enrollment peer: James Madison High School (3,983 students)
Jhs 78 Roy H Mann grew from 542 students in 2022-23 to 581 in 2023-24 (+7.2%). Teacher FTE added 39.0 → 41.0 across the same CCD years. Read with this school → · District book → · New York schools → · Find another →
Jhs 78 Roy H Mann in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- James Madison
James Madison High School
3,983 students
- Midwood High S
Midwood High School
3,657 students
- Ps 206 Joseph 1,508
Ps 206 Joseph F Lamb
1,508 students
- Jhs 234 Arthur 1,447
Jhs 234 Arthur W Cunningham
1,447 students
- Ps 197 Kings H 1,074
Ps 197 Kings Highway Academy (the)
1,074 students
- This school 662
Jhs 78 Roy H Mann
662 students
What this shows Jhs 78 Roy H Mann reports 662 students on the CCD universe file.
How Jhs 78 Roy H Mann compares
Jhs 78 Roy H Mann is a growing campus on CCD: ratios and free-lunch share vs New York and U.S. means.
| Metric | This school | vs New York | New York avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 17:1 | ▲ 44% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 68.6% | ▲ 22% | 56.2% | 51.7% |
| Enrollment | 662 | top 21% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
17:1
Leaner classes than 30% of US schools, heavier class loads than most.
662
Bigger than 78% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
68.6%
free-lunch eligible
- 22% above the New York average of 56.2%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
17:1
students per teacher
- 44% above state mean
Top 94% in New York - lower ratio than 6% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
36.6%
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.
Student demographics
African American 49.1%
White 19.0%
Hispanic or Latino 18.1%
Asian 10.3%
Two or More 2.9%
American Indian / Alaska Native 0.5%
Native Hawaiian / Pacific Islander 0.2%
Largest group: African American at 49.1% of enrollment.
Student-body diversity index 67.9/100
Simpson diversity index - at 67.9, Jhs 78 Roy H Mann is more mixed than the New York school average of 45.5.
How Jhs 78 Roy H Mann Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| James Madison High School | Larger | Similar economic need | Higher S:T ratio |
| Midwood High School | Larger | Similar economic need | Similar S:T ratio |
| Ps 206 Joseph F Lamb | Larger | Similar economic need | Lower S:T ratio |
| Jhs 234 Arthur W Cunningham | Larger | Similar economic need | Lower S:T ratio |
| Ps 197 Kings Highway Academy (the) | Larger | Similar economic need | Similar S:T ratio |
Comparisons are relative to Jhs 78 Roy H Mann's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 3,657
- Students per teacher
- 15.6:1
- Resource Index
- 38/100
- Enrollment
- 1,508
- Students per teacher
- 12.6:1
- Resource Index
- 35/100
- Enrollment
- 1,447
- Students per teacher
- 14:1
- Resource Index
- 31/100
- Enrollment
- 1,074
- Students per teacher
- 16.8:1
- Resource Index
- 20/100
Nationwide middle schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~662 students)
Frequently asked questions about Jhs 78 Roy H Mann
How many students attend Jhs 78 Roy H Mann?
Jhs 78 Roy H Mann has 662 students enrolled. It is a middle school in Brooklyn, NY. CCD year-over-year: 542 (2022-23) → 581 (2023-24), up 39.
What is the student-teacher ratio at Jhs 78 Roy H Mann?
The student-teacher ratio at Jhs 78 Roy H Mann is 17:1, which is 44% higher than the New York average of 11.8:1 and 8% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Jhs 78 Roy H Mann?
68.6% of students at Jhs 78 Roy H Mann are eligible for free lunch, compared to the New York average of 56.2%.
What is the racial and ethnic makeup of Jhs 78 Roy H Mann?
The largest demographic group at Jhs 78 Roy H Mann is African American at 49.1% of enrollment, in Brooklyn, NY. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 67.9/100.
What is the Resource Investment Index for Jhs 78 Roy H Mann?
Jhs 78 Roy H Mann has a Resource Investment Index of 20/100 (lower reported resources relative to schools nationally) based on 2 factors: student-teacher ratio, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology). Limited indicators were available, so the index reflects partial data.
How does Jhs 78 Roy H Mann rank among middle schools in Brooklyn?
By Resource Investment Index, Jhs 78 Roy H Mann ranks #93 of 94 middle schools in Brooklyn, NY. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Brooklyn on the city page.
What other schools are in New York City Geographic District #22?
Besides Jhs 78 Roy H Mann, New York City Geographic District #22 also operates James Madison High School (3,983 students), Midwood High School (3,657 students), and Ps 206 Joseph F Lamb (1,508 students). See the New York City Geographic District #22 district page for the complete list.