Chelsea High School
Grades 09-12 CHELSEA, MA
Improved 23 spots from last year
MCAS Test Scores
Massachusetts Comprehensive Assessment System results
English Language Arts
Mathematics
Science
Score Trends
| Year | Subject | Grade | Proficient+ | Advanced |
|---|---|---|---|---|
| 2025 | English Language Arts | 10 | 21% | 1% |
| 2025 | Mathematics | 10 | 19% | 3% |
| 2025 | Science | 10 | 19% | 2% |
| 2024 | English Language Arts | 10 | 29% | 3% |
| 2024 | Mathematics | 10 | 19% | 2% |
| 2024 | Science | 10 | 21% | 2% |
| 2023 | English Language Arts | 10 | 26% | 3% |
| 2023 | Mathematics | 10 | 20% | 2% |
| 2023 | Science | 10 | 19% | 2% |
| 2022 | English Language Arts | 10 | 30% | 3% |
| 2022 | Mathematics | 10 | 29% | 3% |
| 2022 | Science | 10 | 28% | 4% |
MCAS is administered annually to students in grades 3-8 and 10. Scores reflect the percentage of students meeting or exceeding grade-level expectations.
Student Demographics
1,649 students enrolled
Race/Ethnicity
Gender
Student Programs
Athletics Programs
18 sports programs with 796 student athletes
Boys Sports
- Softball 43 athletes
- Basketball 38 athletes
- Volleyball 36 athletes
- Track-Outdoor 33 athletes
- Rugby 33 athletes
- Football 32 athletes
- Baseball 15 athletes
- Cross Country 11 athletes
- Wrestling 2 athletes
Girls Sports
- Wrestling 243 athletes
- Unified Basketball 155 athletes
- Soccer 34 athletes
- Track-Outdoor 32 athletes
- Volleyball 24 athletes
- Baseball 22 athletes
- Track-Indoor 21 athletes
- Softball 16 athletes
- Basketball 6 athletes
Sports data from the Massachusetts Interscholastic Athletic Association (MIAA).
Frequently Asked Questions
What is Chelsea High School's letter grade?
Chelsea High School has earned a letter grade of C, based on MCAS test scores, attendance, and other performance metrics. This grade represents how the school compares to other Massachusetts High schools.
What grades does Chelsea High School serve?
Chelsea High School serves students in grades 09 through 12.
Is Chelsea High School part of a school district?
Yes, Chelsea High School is part of Chelsea School District. The district oversees multiple schools in the area and provides centralized administration, curriculum standards, and support services.
How are school ratings calculated?
School ratings are calculated using multiple factors including MCAS test scores (proficiency and growth), attendance rates, graduation rates (for high schools), and student-teacher ratios. The composite score is then converted to a letter grade based on statewide percentile rankings.
Does Chelsea High School offer AP courses?
For information about AP courses at Chelsea High School, please contact the school directly or visit their website.