- Enrollment
- 1,453
- Students per teacher
- 16.5:1
- Resource Index
- 26/100
Other / mixed grade configuration · Waterbury, CT
International School
Federal NCES profile for International School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 28/100.
2024-25 NCES dataOther / mixed grade configurationNCES 090483001950
👥 S:T ratio 0
🌟 Gifted program 30
🎓 Counselors 0
📋 Attendance 82
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
International School earns 28/100 on the Resource Investment Index, with class sizes larger than 98% of Connecticut schools. It is also less racially and ethnically mixed than most Connecticut schools.
- #10 of 21
- schools in Waterbury · Resource Index
- 28
- Resource Index · Lower
- 25:1
- large classes for Connecticut
- 62.6%
- free-lunch eligible
International School has class sizes larger than 98% of Connecticut schools. Computed live against every Connecticut school reporting to NCES.
By Resource Investment Index, International School ranks #10 of 21 schools in Waterbury, CT.
School address
District: Waterbury School District · Connecticut
NCES ID 090483001950 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+45 students YoY
International School grew from 171 students in 2022-23 to 216 in 2023-24 (+26.3%).
Teacher FTE added 11.6 → 14.1 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Growing CCD campus
+45 students YoY 090483001950 · Waterbury, CT Other · SMALL · TRAD
275 enr · 25:1 · 62.6% lunch · RII 28
Nearest enrollment peer: Crosby High School (1,453 students)
International School grew from 171 students in 2022-23 to 216 in 2023-24 (+26.3%). Teacher FTE added 11.6 → 14.1 across the same CCD years. Read with this school → · District book → · Connecticut schools → · Find another →
International School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Crosby High Sc
Crosby High School
1,453 students
- John F. Kenned
John F. Kennedy High School
1,391 students
- Wilby High Sch
Wilby High School
1,196 students
- Michael F. Wal
Michael F. Wallace Middle School
1,059 students
- West Side Midd
West Side Middle School
848 students
- This school 275
International School
275 students
What this shows International School reports 275 students on the CCD universe file.
How International School compares
International School is a growing campus on CCD: ratios and free-lunch share vs Connecticut and U.S. means.
| Metric | This school | vs Connecticut | Connecticut avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 25:1 | ▲ 107% | 12.1:1 | 15.7:1 |
| Free-lunch eligible | 62.6% | ▲ 72% | 36.4% | 51.7% |
| Enrollment | 275 | top 81% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
25:1
Leaner classes than 5% of US schools, heavier class loads than most.
275
Bigger than 29% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Economic need
62.6%
free-lunch eligible
- 72% above the Connecticut average of 36.4%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
25:1
students per teacher
- 107% above state mean
Top 98% in Connecticut - lower ratio than 2% of state schools
Well above 20:1, one of the more stretched staffing loads nationally relative to enrollment.
Engagement
7.3%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$20,129
per pupil, district-wide
- below Connecticut avg of $24,680
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors0.3 FTE
Student-support staffing from the Civil Rights Data Collection.
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 87.3%
African American 8.0%
Two or More 2.9%
White 1.8%
Largest group: Hispanic or Latino at 87.3% of enrollment.
Student-body diversity index 23.0/100
Simpson diversity index - at 23.0, International School is less mixed than the Connecticut school average of 50.5.
Programs
District finance for Waterbury School District reports $20,129 per pupil (NCES F-33) - open the district page for the full revenue mix.
How International School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Crosby High School | Larger | Higher economic need | Lower S:T ratio |
| John F. Kennedy High School | Larger | Higher economic need | Lower S:T ratio |
| Wilby High School | Larger | Higher economic need | Lower S:T ratio |
| Michael F. Wallace Middle School | Larger | Higher economic need | Lower S:T ratio |
| West Side Middle School | Larger | Higher economic need | Lower S:T ratio |
Comparisons are relative to International School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,391
- Students per teacher
- 15.5:1
- Resource Index
- 35/100
- Enrollment
- 1,196
- Students per teacher
- 15.1:1
- Resource Index
- 30/100
- Enrollment
- 1,059
- Students per teacher
- 11.5:1
- Resource Index
- 38/100
- Enrollment
- 848
- Students per teacher
- 10.2:1
- Resource Index
- 37/100
Similar other schools in Waterbury
6 comparable other schools (grades Mixed) serving the same city.
Waterbury Arts Magnet School
Standard public school
820 students 16.7:1 students per teacher
Rotella Interdistrict Magnet School
Standard public school
614 students 17.1:1 students per teacher
Wendell L. Cross School
Standard public school
606 students 16.4:1 students per teacher
Maloney Interdistrict Magnet School
Standard public school
590 students 14:1 students per teacher
B. W. Tinker School
Standard public school
578 students 18.6:1 students per teacher
H. S. Chase School
Standard public school
543 students 10.6:1 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 (~275 students)
Frequently asked questions about International School
How many students attend International School?
International School has 275 students enrolled. It is a public school in Waterbury, CT. CCD year-over-year: 171 (2022-23) → 216 (2023-24), up 45.
What is the student-teacher ratio at International School?
The student-teacher ratio at International School is 25:1, which is 107% higher than the Connecticut average of 12.1:1 and 59% higher than the national average of 15.7:1.
What percentage of students receive free lunch at International School?
62.6% of students at International School are eligible for free lunch, compared to the Connecticut average of 36.4%.
What is the racial and ethnic makeup of International School?
The largest demographic group at International School is Hispanic or Latino at 87.3% of enrollment, in Waterbury, CT.
What is the Resource Investment Index for International School?
International School has a Resource Investment Index of 28/100 (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 International School rank among schools in Waterbury?
By Resource Investment Index, International School ranks #10 of 21 schools in Waterbury, CT. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Waterbury on the city page.
What other schools are in Waterbury School District?
Besides International School, Waterbury School District also operates Crosby High School (1,453 students), John F. Kennedy High School (1,391 students), and Wilby High School (1,196 students). See the Waterbury School District district page for the complete list.