A Top 18%

Chelmsford High School

Grades 09-12 CHELMSFORD, MA

Moved down 40 places from 2024 to 2025

#62 State Rank
A District Grade
200 Richardson Road, CHELMSFORD, MA 01863
High Grad Rate 99% Active Athletics 32 sports
Rating sources & methodology MCAS scores from 2025 Data updated September 2026
1,442 Students
94.6% Attendance Rate
65.7 Composite Score
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MCAS score comparisons

Students meeting or exceeding expectations · 2025 results

Each subject shows the average of published grade percentages, without weighting by enrollment. The bars compare available years on a 0–100% scale. Grade coverage and student groups can change between years.

English Language Arts

75% Meeting or exceeding expectations

15% exceeding expectations

2023 78% 78%
2024 83% 83%
2025 75% 75%

Mathematics

63% Meeting or exceeding expectations

20% exceeding expectations

2023 67% 67%
2024 75% 75%
2025 63% 63%

Science

53% Meeting or exceeding expectations

12% exceeding expectations

2023 64% 64%
2024 70% 70%
2025 53% 53%
View published results by year and grade
Available grade results for the latest 3 published years. An em dash means the value was not published.
YearSubjectGradeMeeting+Exceeding
2025English Language Arts10 75%15%
2025Mathematics10 63%20%
2025Science10 53%12%
2024English Language Arts10 83%34%
2024Mathematics10 75%27%
2024Science10 70%21%
2023English Language Arts10 78%26%
2023Mathematics10 67%16%
2023Science10 64%16%

MCAS subject percentages differ from the composite school rating, which combines available academic and school indicators. Letter grades and state ranks compare schools at the same level. A rank change describes relative position, not a percentage-point change in test scores. Read the rating methodology.

Student Demographics

1,442 students enrolled

Race/Ethnicity

White 61.5%
Asian 19.6%
Hispanic 9.7%
Black 4.8%
Multiracial 4%

Gender

52% Male
47.8% Female

Student Programs

English Learners 2.5%
Special Education 16.6%
Free/Reduced Lunch 16%

Athletics Programs

32 sports programs with 2,624 student athletes

Boys Sports

  • Volleyball 103 athletes
  • Football 97 athletes
  • Track-Outdoor 92 athletes
  • Softball 64 athletes
  • Rugby 52 athletes
  • Baseball 49 athletes
  • Basketball 40 athletes
  • Wrestling 40 athletes
  • Tennis 38 athletes
  • Ice Hockey 34 athletes
  • Cross Country 34 athletes
  • Ski-Alpine 34 athletes
  • Lacrosse 34 athletes
  • Ski-Nordic 16 athletes
  • Track-Indoor 14 athletes
  • Golf 12 athletes

Girls Sports

  • Wrestling 753 athletes
  • Unified Basketball 559 athletes
  • Track-Outdoor 104 athletes
  • Track-Indoor 75 athletes
  • Soccer 64 athletes
  • Volleyball 54 athletes
  • Cross Country 47 athletes
  • Baseball 41 athletes
  • Ice Hockey 35 athletes
  • Softball 31 athletes
  • Ski-Alpine 31 athletes
  • Fall Swim/Dive 22 athletes
  • Tennis 22 athletes
  • Basketball 21 athletes
  • Gymnastics 8 athletes
  • Golf 4 athletes

Sports data from the Massachusetts Interscholastic Athletic Association (MIAA).

School Performance

Key metrics and program information

Graduation

1% Dropout Rate

Attendance

94.6% Attendance Rate
12.5% Chronic Absence

Advanced Placement

College Readiness

MassCore is Massachusetts' recommended college-ready curriculum.

Staffing

Location

200 Richardson Road, CHELMSFORD, MA

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A-Rated School

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Part of Chelmsford School District

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Frequently Asked Questions

What is Chelmsford High School's grade rating?

Chelmsford High School has earned a grade of A, ranked #62 in Massachusetts, placing it in the top 18% of Massachusetts High schools. This rating is based on 2025 MCAS test scores, attendance rates, and other performance metrics from the Massachusetts Department of Elementary and Secondary Education.

How many students attend Chelmsford High School?

Approximately 1,442 students are enrolled at Chelmsford High School.

How does Chelmsford High School perform on MCAS tests?

Based on the most recent MCAS results, Chelmsford High School's proficiency rates are: English Language Arts (75% proficient), Mathematics (63% proficient), Science (53% proficient). MCAS (Massachusetts Comprehensive Assessment System) tests measure student achievement in English Language Arts, Mathematics, and Science.

What sports does Chelmsford High School offer?

Chelmsford High School offers 32 athletic programs (16 boys' sports, 16 girls' sports) with approximately 2,624 student athletes participating. Sports programs are sanctioned by the MIAA (Massachusetts Interscholastic Athletic Association).

What is the graduation rate at Chelmsford High School?

Chelmsford High School has a excellent 99% graduation rate. The state average graduation rate in Massachusetts is approximately 89%.

What is the attendance rate at Chelmsford High School?

Chelmsford High School has an attendance rate of 94.6%. Strong attendance is correlated with better academic outcomes.

What school district is Chelmsford High School part of?

Chelmsford High School is part of Chelmsford School District. For enrollment information, contact the district office or visit the school's website. Enrollment typically requires proof of residency within the district boundaries.

How are Massachusetts school ratings calculated?

School ratings are calculated using multiple data points from the Massachusetts Department of Elementary and Secondary Education (DESE), including MCAS test scores (proficiency and growth), attendance rates, graduation rates (for high schools), and student-teacher ratios. Schools are ranked by percentile against similar schools statewide.