Chelsea High
1,611
Students
14.7:1
S:T Ratio
School Snapshot
Key metrics at a glance941
B-
11
B+
16%
C
15:1
B+
This Week at Chelsea High – June 14, 2026
217 students practicing on Varsity Tutors
Academic Resources
Typical courses and practice resources for students at Chelsea High
Standardized Test Dates
Upcoming national, state, and school calendar dates that affect students at Chelsea High.
National Tests
June 20, 2026 – July 4, 2026
SAT Score Release Date
June 23, 2026
ACT
June 24, 2026
ACT
July 1, 2026 – July 31, 2026
AP Score Release — All
July 6, 2026
ACT Photo Upload/Standby Deadline
July 11, 2026
ACT — National
School Milestones
June 5, 2026 – June 16, 2026
Graduation
June 12, 2026 – June 22, 2026
School End/Summer Start
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299 Everett Avenue, Chelsea, MA 02150
(617)466-5000
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Chelsea Public Schools
Academic Calendar
Important dates, holidays, and school events
“Chelsea Public Schools is a gateway school system that welcomes”