Canon-McMillan School District School Calendar 2026-2027

At a Glance

CMSD is a suburban school district with 9 schools. For the 2026-2027 school year, classes begin August 20 and end June 4. Canon-McMillan's mascot is the "Big Mac" — depicted as a Scottish Highland soldier — and the district is the largest in Washington County, Pennsylvania by enrollment. This calendar includes 6 professional development days, 2 early-release or half days — useful to know when planning childcare. Standardized testing windows: Standardized Testing Window (October 21); Standardized Testing Window (November 9–November 13); Standardized Testing Window (January 20–January 22); Standardized Testing Window (April 26–April 30); Standardized Testing Window (May 3–May 14); Standardized Testing Window (May 3–May 22).

Also known as CMSD.

Schools in Canon-McMillan School District

North Strabane Intrmd Sch (Middle)
Wylandville El Sch (Elementary)
Canon-McMillan SHS (High)
South Central El (Elementary)
Hills-Hendersonville El Sch (Elementary)
Cecil Intrmd Sch (Middle)
Canonsburg MS (Middle)
Muse El Sch (Elementary)
Borland Manor El Sch (Elementary)

Canon-McMillan School District 2026-2027 School Calendar

All schools

2026-08-10 — Kdg. Orientation (Wylandville, Hills, Borland & South Central) (closed)
2026-08-10 to 2026-08-11 — Kdg. Orientation (Muse Aug. 10, 11) (closed)
2026-08-11 — 7th & 9th grade Orientation (in session)
2026-08-13 — 5th Grade Orientation (both Schools) (in session)
2026-08-12 to 2026-08-14 — Inservice/Staff Devlp. Day for New Teachers (closed)
2026-08-17 to 2026-08-19 — Act 80 Inservice/Staff Devlp. Day for all Teachers (closed)
2026-08-20 — First Day of School for Students (in session)
2026-09-07 — Labor Day (closed)
2026-09-15 — Open House (Middle School) (in session)
2026-09-16 — Open House (Cecil Int. and N. Strabane Int.) (in session)
2026-09-17 — Open House (High School) (in session)
2026-09-22 — Progress Reports (in session)
2026-09-21 — Open House (South Central 21 / Borland 22) (in session)
2026-09-22 — Open House (South Central 21 / Borland 22) (in session)
2026-09-23 to 2026-09-24 — Open House (Muse Elementary) (in session)
2026-09-28 — Open House (Hills 28 / Wylandville 29) (in session)
2026-09-29 — Open House (Hills 28 / Wylandville 29) (in session)
2026-10-12 — Act 80 Inservice/Staff Development (closed)
2026-10-21 — PSAT Testing (grade 10 and 11) (in session)
2026-10-23 — End of 1st marking period (in session)
2026-10-30 — Report Cards Distributed (in session)
2026-11-02 — Act 80 Inservice/Staff Parent/Teacher Conferences (closed)
2026-11-03 — Act 80 Inservice Day (closed)
2026-11-09 to 2026-11-13 — Terra Nova Test (grade 6) (in session)
2026-11-25 — 2 Hour early dismissal (Staff Development) (partial)
2026-11-26 to 2026-11-30 — Thanksgiving Vacation (closed)
2026-12-02 — Progress Reports (in session)
2026-12-07 to 2026-12-18 — Winter Keystone Exams (in session)
2026-12-21 to 2027-01-01 — Winter Break (closed)
2027-01-15 — End of 2nd Marking Period (in session)
2027-01-18 — Clerical Day (teachers only-no school for students) (closed)
2027-01-20 to 2027-01-22 — Naglieri Test (2nd Grade) (in session)
2027-01-22 — Report Cards Distributed (in session)
2027-02-15 — President's Day (no school) (closed)
2027-02-19 — Progress Reports (in session)
2027-02-22 — Online Kindergarten Registration (in session)
2027-03-22 — Act 80 K-8 Staff Development (closed)
2027-03-23 to 2027-03-26 — Spring Break (no school) (closed)
2027-03-30 — End of 3rd marking period (in session)
2027-04-06 — Report Cards Distributed (in session)
2027-04-16 — No School (closed)
2027-04-26 to 2027-04-30 — PSSA Testing (grades 3-8 (ELA)) (in session)
2027-05-03 — Progress Reports (in session)
2027-05-03 to 2027-05-14 — PSSA Testing Grades 3-8 (Math), Grades 4-8 (Science) and Make-up Tests (in session)
2027-05-03 to 2027-05-22 — High School Advanced Placement Testing and Make-up Tests - (Date subject to Change) (in session)
2027-05-17 to 2027-05-28 — Keystone Exams (in session)
2027-05-18 — Kindergarten Screenings (2027-2028 students) (in session)
2027-05-18 — Inservice/Staff Development Day for All Teachers (closed)
2027-05-31 — Memorial Day (no school) (closed)
2027-06-03 — Graduation Date - 7:00 p.m. (in session)
2027-06-04 — Graduation Date (alternate for incliment weather) if inclement still persists, the event will be moved indoors 7:00 p.m. (in session)
2027-06-04 — End of 4th marking period (in session)
2027-06-04 — Last Day of School - Dismissal of Students only as follows: 11:00 Secondary; 11:30 Elementary (partial)
2027-06-07 — Clerical Day (closed)