School overview
At a glance
Reported students
1,402
NCES CCD 2024–25, where reported
Teachers (FTE)
100.3
NCES CCD 2024–25
Student–teacher ratio
14:1
Calculated, not a class-size measure
Grades served
09–12
NCES preliminary directory 2025–26
School benchmarks
Massachusetts high enrollment
85th percentile
Compared with 378 same-level schools reporting enrollment.
District median enrollment
495
Chelmsford High: 1,402 reported students.
State peer staffing position
86th percentile
14:1 reported; state peer median 11.3:1. Ratio is not class size.
Profile interpretation
What the reported data says about Chelmsford High
Chelmsford High is a public high school serving grades 09–12 in North Chelmsford. It is one of 8 current school records connected to Chelmsford. NCES reports 1,402 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 85th percentile for that peer group. Size describes the campus, not instructional quality.
The reported student–teacher ratio is 14:1, 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 two largest reported race and ethnicity groups are White (62.3%) and Asian (18.9%). English learners represent 1.3% of enrollment. Students served under IDEA represent 13.6%. These figures help families understand who the school serves; they are not rating inputs.
The 2021–22 civil-rights collection reports access to Advanced Placement, computer science. The school reported 22 AP courses. Program availability changes, so families should confirm the current catalog and participation rules directly with the school.
Turn data into a school visit
Questions worth asking Chelmsford High
- 1How do the reported 14:1 student–teacher ratio and 100.3 teacher FTE translate into actual class sizes by grade?
- 2Have the reported academic programs changed since the 2021–22 CRDC collection?
- 3How are the school's 7.6 counselor FTE allocated across grades and student needs?
- 4What meal assistance, transportation, after-school, and family-support services are currently available?
Student context
Enrollment needs
- English learners
- 1.3%
- Students with disabilities
- 13.6%
- Free/reduced-price lunch
- Not reported
- Lunch program
- Yes participating without using any Provision or the CEO
People available to students
Support staff
- Counselors (FTE)
- 7.6
- Nurses (FTE)
- 2
- Psychologists (FTE)
- 3
- Social workers (FTE)
- 0
Student demographics
Race and ethnicity share of reported enrollment
- White62.3%
- Hispanic9.5%
- Black4.6%
- Asian18.9%
- American Indian / Alaska Native0.1%
- Native Hawaiian / Pacific Islander0.1%
- Multiracial4.1%
Race/ethnicity: NCES CCD 2024–25 where reported, otherwise CRDC 2021–22. English learner and disability context: CRDC 2021–22. Privacy rules can produce missing values.
Learning opportunities
Programs reported by the school
Advanced Placement
Offered
22 courses reported
Gifted and talented
Not reported as offered
Computer science
Offered
Program availability is from CRDC 2021–22 and can change. Confirm current courses and eligibility with the school.
Continue exploring
Other schools in Chelmsford
Start with campuses at the same school level or with similar reported enrollment.
McCarthy Middle School
Middle · Grades 07–08
808 reported students
Col Moses Parker School
Middle · Grades 05–06
778 reported students
Byam School
Elementary · Grades KG–04
510 reported students
Center Elementary School
Elementary · Grades KG–04
480 reported students
Charles D Harrington
Elementary · Grades KG–04
468 reported students
South Row
Elementary · Grades KG–04
464 reported students