- Enrollment
- 1,742
- Students per teacher
- 13.5:1
- Resource Index
- 42/100
Other / mixed grade configuration · New Haven, CT
John S. Martinez Sea and Sky Stem School
Federal NCES profile for John S. Martinez Sea and Sky Stem School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 31/100.
2024-25 NCES dataOther / mixed grade configurationNCES 090279001386
👥 S:T ratio 39
🌟 Gifted program 70
🎓 Counselors 3
📋 Attendance 13
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
John S. Martinez Sea and Sky Stem School earns 31/100 on the Resource Investment Index, with class sizes larger than 92% of Connecticut schools. It is also less racially and ethnically mixed than most Connecticut schools.
- #12 of 25
- schools in New Haven · Resource Index
- 31
- Resource Index · Lower
- 15.2:1
- large classes for Connecticut
- 74.6%
- free-lunch eligible
John S. Martinez Sea and Sky Stem School has class sizes larger than 92% of Connecticut schools. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, John S. Martinez Sea and Sky Stem School ranks #12 of 25 schools in New Haven, CT.
School address
District: New Haven School District · Connecticut
NCES ID 090279001386 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+7 students YoY
John S. Martinez Sea and Sky Stem School held near 483 students from 2022-23 to 2023-24 (+7 headcount).
Teacher FTE held 32.0 → 32.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+7 students YoY 090279001386 · New Haven, CT Other · SMALL · TRAD
486 enr · 15.2:1 · 74.6% lunch · RII 31
Nearest enrollment peer: Wilbur Cross High School (1,742 students)
John S. Martinez Sea and Sky Stem School held near 483 students from 2022-23 to 2023-24 (+7 headcount). Teacher FTE held 32.0 → 32.0 across the same CCD years. Read with this school → · District book → · Connecticut schools → · Find another →
John S. Martinez Sea and Sky Stem School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Wilbur Cross H
Wilbur Cross High School
1,742 students
- James Hillhous
James Hillhouse High School
1,124 students
- Fair Haven Sch
Fair Haven School
734 students
- Hill Regional 625
Hill Regional Career High School
625 students
- Engineering - 608
Engineering - Science University Magnet School
608 students
- This school 486
John S. Martinez Sea and Sky Stem School
486 students
What this shows John S. Martinez Sea and Sky Stem School reports 486 students on the CCD universe file.
How John S. Martinez Sea and Sky Stem School compares
John S. Martinez Sea and Sky Stem School held steady on CCD headcount: ratios and free-lunch share vs Connecticut and U.S. means.
| Metric | This school | vs Connecticut | Connecticut avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 15.2:1 | ▲ 26% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 74.6% | ▲ 105% | 36.4% | 51.7% |
| Enrollment | 486 | top 35% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.2:1
Leaner classes than 45% of US schools, a middle-of-the-pack class size.
486
Bigger than 60% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
74.6%
free-lunch eligible
- 105% above the Connecticut average of 36.4%
Well above the 40% Title I schoolwide threshold, among the highest-need profiles in the state; federal funds support the whole school, not individual students.
Staffing depth
15.2:1
students per teacher
- 26% above state mean
Top 92% in Connecticut - lower ratio than 8% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
34.8%
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
$22,543
per pupil, district-wide
- below Connecticut avg of $24,680
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors1.0 FTE
Per 486 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
Hispanic or Latino 89.9%
African American 5.3%
White 2.1%
Two or More 1.2%
Asian 1.0%
American Indian / Alaska Native 0.4%
Largest group: Hispanic or Latino at 89.9% of enrollment.
Student-body diversity index 18.8/100
Simpson diversity index - at 18.8, John S. Martinez Sea and Sky Stem School is less mixed than the Connecticut school average of 50.5.
Programs
Gifted & talented Yes
District finance for New Haven School District reports $22,543 per pupil (NCES F-33) - open the district page for the full revenue mix.
How John S. Martinez Sea and Sky Stem School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Wilbur Cross High School | Larger | Similar economic need | Lower S:T ratio |
| James Hillhouse High School | Larger | Similar economic need | Similar S:T ratio |
| Fair Haven School | Larger | Similar economic need | Lower S:T ratio |
| Hill Regional Career High School | Larger | Similar economic need | Lower S:T ratio |
| Engineering - Science University Magnet School | Larger | Lower economic need | Lower S:T ratio |
Comparisons are relative to John S. Martinez Sea and Sky Stem School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,124
- Students per teacher
- 14.8:1
- Resource Index
- 55/100
- Enrollment
- 734
- Students per teacher
- 11:1
- Resource Index
- 33/100
- Enrollment
- 625
- Students per teacher
- 10.4:1
- Resource Index
- 47/100
- Enrollment
- 608
- Students per teacher
- 10.7:1
- Resource Index
- 45/100
Similar other schools in New Haven
6 comparable other schools (grades Mixed) serving the same city.
Amistad Academy
Standard public school
1,105 students 9.9:1 students per teacher
Elm City College Preparatory School
Standard public school
760 students 16.2:1 students per teacher
Fair Haven School
Standard public school
734 students 11:1 students per teacher
Ross/Woodward School
Standard public school
562 students 12.8:1 students per teacher
John C. Daniels
Standard public school
522 students 12.1:1 students per teacher
Nathan Hale School
Standard public school
506 students 11.5:1 students per teacher
Nationwide other 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 (~486 students)
Frequently asked questions about John S. Martinez Sea and Sky Stem School
How many students attend John S. Martinez Sea and Sky Stem School?
John S. Martinez Sea and Sky Stem School has 486 students enrolled. It is a public school in New Haven, CT. CCD year-over-year: 476 (2022-23) → 483 (2023-24), nearly flat (+7).
What is the student-teacher ratio at John S. Martinez Sea and Sky Stem School?
The student-teacher ratio at John S. Martinez Sea and Sky Stem School is 15.2:1, which is 26% higher than the Connecticut average of 12.1:1 and 3% lower than the national average of 15.7:1.
What percentage of students receive free lunch at John S. Martinez Sea and Sky Stem School?
74.6% of students at John S. Martinez Sea and Sky Stem School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of John S. Martinez Sea and Sky Stem School?
The largest demographic group at John S. Martinez Sea and Sky Stem School is Hispanic or Latino at 89.9% of enrollment, in New Haven, CT.
What is the Resource Investment Index for John S. Martinez Sea and Sky Stem School?
John S. Martinez Sea and Sky Stem School has a Resource Investment Index of 31/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does John S. Martinez Sea and Sky Stem School rank among schools in New Haven?
By Resource Investment Index, John S. Martinez Sea and Sky Stem School ranks #12 of 25 schools in New Haven, CT. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in New Haven on the city page.
What other schools are in New Haven School District?
Besides John S. Martinez Sea and Sky Stem School, New Haven School District also operates Wilbur Cross High School (1,742 students), James Hillhouse High School (1,124 students), and Fair Haven School (734 students). See the New Haven School District district page for the complete list.