At a glance
Reported students
1,649
NCES CCD 2024–25
Teachers (FTE)
125.72
NCES CCD 2024–25
Student–teacher ratio
13.1:1
Calculated; not a class-size measure
Grades served
09–12
NCES preliminary directory 2025–26
School benchmarks
Massachusetts high enrollment
90th percentile
Compared with 378 same-level schools reporting enrollment.
District median enrollment
472
Chelsea High: 1,649 reported students.
State peer staffing position
81st percentile
13.1:1 reported; state peer median 11.3:1. Ratio is not class size.
Historical enrollment and staffing · CRDC 2021–22
These older figures are kept separate from 2024–25 statistics and benchmarks. Differences between years can reflect changes in enrollment, staffing, or reporting scope.
- Students
- 1,496
- Teachers (FTE)
- 122
- Student–teacher ratio
- 12.3:1
What the reported data says about Chelsea High
Chelsea High is a public high school serving grades 09–12 in Chelsea. It is one of 11 current school records connected to Chelsea. NCES reports 1,649 students for 2024–25.
Among 378 high schools in Massachusetts with comparable records, this school is larger than the reported median of 675.5 students. Its enrollment is at approximately the 90th percentile for that peer group. Size describes the campus, not instructional quality.
The reported student–teacher ratio is 13.1:1, above the Massachusetts median of 11.3:1 for the same school level. This ratio uses total enrollment and teacher FTE; it is not an average classroom headcount and can be affected by special programs or part-time staffing.
The largest reported race and ethnicity groups are Hispanic or Latino (88.5%) and White (5.1%). English learners represent 31% of enrollment. Students served under IDEA represent 12.4%. These figures help families understand who the school serves; they are not rating inputs.
The 2021–22 civil-rights collection reports AP student enrollment, computer science. The school reported 11 AP courses. Program availability changes, so families should confirm the current catalog and participation rules directly with the school.
Questions worth asking Chelsea High
- 1How do the reported 13.1:1 student–teacher ratio and 125.72 teacher FTE translate into actual class sizes by grade?
- 2Have the reported academic programs changed since the 2021–22 CRDC collection?
- 3What counseling support is available today? The school reported 10 counselor FTE in 2021–22.
- 4Does community eligibility provide breakfast and lunch to every enrolled student, and are summer meals available?
Enrollment needs
- English learners
- 31%
- Students with disabilities
- 12.4%
- Lunch program
- Yes under Community Eligibility Option (CEO)
Reported support staff
- Counselors (FTE)
- 10
- Nurses (FTE)
- 1.6
- Psychologists (FTE)
- 1
- Social workers (FTE)
- 5
CRDC 2021–22 full-time-equivalent counts; verify current assignments with the school.
Student demographics
Race and ethnicity share of reported enrollment
- White5.1%
- Hispanic88.5%
- Black4.4%
- Asian0.9%
- American Indian / Alaska Native0.1%
- Native Hawaiian / Pacific Islander0%
- Multiracial0.8%
Race/ethnicity: NCES CCD 2024–25. English learner and disability context: CRDC 2021–22. Lunch eligibility: NCES CCD 2024–25. Privacy rules can produce missing values.
Programs reported by the school
AP student enrollment
Students enrolled
11 distinct courses reported
Gifted and talented
Not reported as offered
Computer science
Offered
CRDC 2021–22: the AP flag records student enrollment; gifted and computer-science fields describe reported programs/classes. Confirm current courses and eligibility with the school.
Other schools in Chelsea
Start with campuses at the same school level or with similar reported enrollment.
Chelsea Opportunity Academy
High · Grades 09–12
132 reported students
Shurtleff Early Childhood
Elementary · Grades PK–01
779 reported students
Clark Avenue School
Middle · Grades 05–08
673 reported students
George F. Kelly Elementary
Elementary · Grades 01–04
527 reported students
Joseph A. Browne School
Middle · Grades 05–08
487 reported students
Frank M Sokolowski Elementary
Elementary · Grades 01–04
472 reported students