A- Top 25%

Byam School

Grades K-04 CHELMSFORD, MA

Dropped 7 spots from last year

#211 State Rank
A District Grade
25 Maple Road, CHELMSFORD, MA 01824
MCAS scores from 2025 Data updated December 2025
510 Students
94.9% Attendance Rate
54.3 Composite Score

MCAS Test Scores

Massachusetts Comprehensive Assessment System results

English Language Arts

60.5% Proficient or Above
6.5% Advanced

Mathematics

50.5% Proficient or Above
12.5% Advanced

Score Trends

Year Subject Grade Proficient+ Advanced
2025 English Language Arts 03 65% 10%
2025 English Language Arts 04 56% 3%
2025 Mathematics 03 50% 13%
2025 Mathematics 04 51% 12%
2024 English Language Arts 03 58% 9%
2024 English Language Arts 04 44% 8%
2024 Mathematics 03 54% 16%
2024 Mathematics 04 68% 16%
2023 English Language Arts 03 64% 11%
2023 English Language Arts 04 45% 2%
2023 Mathematics 03 46% 8%
2023 Mathematics 04 49% 9%
2022 English Language Arts 03 43% 5%
2022 English Language Arts 04 57% 10%
2022 Mathematics 03 44% 7%

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

510 students enrolled

Race/Ethnicity

White 65.1%
Asian 14.5%
Hispanic 11.2%
Multiracial 4.7%
Black 3.7%

Gender

52.2% Male
47.8% Female

Student Programs

English Learners 7.3%
Special Education 16.7%
Free/Reduced Lunch 17.8%

School Performance

Key metrics and program information

Attendance

94.9% Attendance Rate
12.8% Chronic Absence

Staffing

Location

25 Maple Road, CHELMSFORD, MA

A--Rated School

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Part of Chelmsford School District

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Frequently Asked Questions

What is Byam School's grade rating?

Byam School has earned a grade of A-, ranked #211 in Massachusetts, placing it in the top 25% of Massachusetts Elementary 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 Byam School?

Approximately 510 students are enrolled at Byam School.

How does Byam School perform on MCAS tests?

Based on the most recent MCAS results, Byam School's proficiency rates are: English Language Arts (60% proficient), Mathematics (50% proficient). MCAS (Massachusetts Comprehensive Assessment System) tests measure student achievement in English Language Arts, Mathematics, and Science.

What is the attendance rate at Byam School?

Byam School has an attendance rate of 94.9%. Strong attendance is correlated with better academic outcomes.

What school district is Byam School part of?

Byam 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.