- Enrollment
- 1,649
- Students per teacher
- 15.1:1
- Resource Index
- 34/100
High school (grades 9-12) · Chelsea, MA
Chelsea Opportunity Academy
Federal NCES profile for Chelsea Opportunity Academy, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 36/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 250354002890
👥 S:T ratio 12
🌟 Gifted program 30
🎓 Counselors 65
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Chelsea Opportunity Academy earns 36/100 on the Resource Investment Index, with class sizes larger than 98% of Massachusetts schools. It is also less racially and ethnically mixed than most Massachusetts schools.
- #2 of 3
- high schools in Chelsea · Resource Index
- 36
- Resource Index · Typical
- 22:1
- large classes for Massachusetts
- 132
- students enrolled
Chelsea Opportunity Academy has class sizes larger than 98% of Massachusetts schools. Computed live against every Massachusetts school reporting to NCES.
By Resource Investment Index, Chelsea Opportunity Academy ranks #2 of 3 high schools in Chelsea, MA.
School address
District: Chelsea · Massachusetts
NCES ID 250354002890 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+10 students YoY
Chelsea Opportunity Academy grew from 115 students in 2022-23 to 125 in 2023-24 (+8.7%).
Teacher FTE added 6.0 → 7.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Growing CCD campus
+10 students YoY 250354002890 · Chelsea, MA High · SMALL · TRAD
132 enr · 22:1 · RII 36
Nearest enrollment peer: Chelsea High (1,649 students)
Chelsea Opportunity Academy grew from 115 students in 2022-23 to 125 in 2023-24 (+8.7%). Teacher FTE added 6.0 → 7.0 across the same CCD years. Read with this school → · District book → · Massachusetts schools → · Find another →
Chelsea Opportunity Academy in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Chelsea High
Chelsea High
1,649 students
- Shurtleff Earl
Shurtleff Early Childhood
779 students
- Clark Avenue S
Clark Avenue School
673 students
- George F. Kell 527
George F. Kelly Elementary
527 students
- Joseph a. Brow 487
Joseph a. Browne School
487 students
- This school 132
Chelsea Opportunity Academy
132 students
What this shows Chelsea Opportunity Academy reports 132 students on the CCD universe file.
How Chelsea Opportunity Academy compares
Chelsea Opportunity Academy is a growing campus on CCD: ratios and free-lunch share vs Massachusetts and U.S. means.
| Metric | This school | vs Massachusetts | Massachusetts avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 22:1 | ▲ 79% | 12.3:1 | 15.7:1 |
| Enrollment | 132 | top 92% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
22:1
Leaner classes than 10% of US schools, heavier class loads than most.
132
Bigger than 13% of US schools by enrollment, a small campus.
Equity indicators methodology
Staffing depth
22:1
students per teacher
- 79% above state mean
Top 98% in Massachusetts - lower ratio than 2% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Funding equity
$20,895
per pupil, district-wide
- below Massachusetts avg of $23,695
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors0.8 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 3 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 2.3 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
Hispanic or Latino 93.2%
White 3.0%
African American 3.0%
Asian 0.8%
Largest group: Hispanic or Latino at 93.2% of enrollment.
Student-body diversity index 13.0/100
Simpson diversity index - at 13.0, Chelsea Opportunity Academy is less mixed than the Massachusetts school average of 47.3.
Programs
AP program Not offered
District finance for Chelsea reports $20,895 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Chelsea Opportunity Academy Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Chelsea High | Larger | No free-lunch data | Lower S:T ratio |
| Shurtleff Early Childhood | Larger | No free-lunch data | Lower S:T ratio |
| Clark Avenue School | Larger | No free-lunch data | Lower S:T ratio |
| George F. Kelly Elementary | Larger | No free-lunch data | Lower S:T ratio |
| Joseph a. Browne School | Larger | No free-lunch data | Lower S:T ratio |
Comparisons are relative to Chelsea Opportunity Academy's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 779
- Students per teacher
- 13.2:1
- Resource Index
- 26/100
- Enrollment
- 673
- Students per teacher
- 13.5:1
- Resource Index
- 30/100
- Enrollment
- 527
- Students per teacher
- 13.9:1
- Resource Index
- 45/100
- Enrollment
- 487
- Students per teacher
- 10.8:1
- Resource Index
- 35/100
Similar high schools in Chelsea
2 comparable high schools (grades 9-12) serving the same city.
Nationwide high 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 (~132 students)
Frequently asked questions about Chelsea Opportunity Academy
How many students attend Chelsea Opportunity Academy?
Chelsea Opportunity Academy has 132 students enrolled. It is a high school in Chelsea, MA. CCD year-over-year: 115 (2022-23) → 125 (2023-24), up 10.
What is the student-teacher ratio at Chelsea Opportunity Academy?
The student-teacher ratio at Chelsea Opportunity Academy is 22:1, which is 79% higher than the Massachusetts average of 12.3:1 and 40% higher than the national average of 15.7:1.
What is the racial and ethnic makeup of Chelsea Opportunity Academy?
The largest demographic group at Chelsea Opportunity Academy is Hispanic or Latino at 93.2% of enrollment, in Chelsea, MA.
What is the Resource Investment Index for Chelsea Opportunity Academy?
Chelsea Opportunity Academy has a Resource Investment Index of 36/100 (typical reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, gifted-program reporting, counselor availability. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Chelsea Opportunity Academy rank among high schools in Chelsea?
By Resource Investment Index, Chelsea Opportunity Academy ranks #2 of 3 high schools in Chelsea, MA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in Chelsea on the city page.
What other schools are in Chelsea?
Besides Chelsea Opportunity Academy, Chelsea also operates Chelsea High (1,649 students), Shurtleff Early Childhood (779 students), and Clark Avenue School (673 students). See the Chelsea district page for the complete list.