Mamaroneck High School
#56
Best ACT in New York High Schools
1,660
Students
12.9:1
S:T Ratio
School Snapshot
Key metrics at a glance1,300
A
29
A
21
A+
36%
C+
13:1
A-
This Week at Mamaroneck – August 18, 2026
219 students practicing on Varsity Tutors
Academic Resources
Typical courses and practice resources for students at Mamaroneck High School
Standardized Test Dates
Upcoming national, state, and school calendar dates that affect students at Mamaroneck High School.
National Tests
August 1, 2026 – November 30, 2026
ISEE — Fall Testing Season
August 3, 2026 – June 30, 2027
SSAT — Flex Testing
August 22, 2026
SAT — National
August 24, 2026 – October 28, 2026
TACHS — Registration
August 28, 2026
SAT — National
September 1, 2026
ACT — National
State Assessments
January 26, 2027 – January 29, 2027
New York Regents — January 2027
February 1, 2027 – April 9, 2027
WIDA ACCESS
February 1, 2027 – April 9, 2027
WIDA Alternate ACCESS
March 8, 2027 – June 11, 2027
NYSAA
April 5, 2027 – May 14, 2027
New York State Assessments — Grades 3-8
June 15, 2027 – June 25, 2027
New York Regents — June 2027
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1000 W Boston Post Rd, Mamaroneck, NY 10543
(914)220-3100
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Mamaroneck Union Free School District
Teachers & Staff
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“It is the mission of the Mamaroneck Union Free School District to promote intellectual engagement and an appreciation of learning as an inherently rewarding activity, and to prepare students to function as responsible citizens in a multicultural world.”