Mapleton School District No. 1 in the county of Adams & St School Calendar 2026-2027

At a Glance

MNCASSD is a suburban school district with 20 schools. For the 2026-2027 school year, classes begin August 13 and end May 26. Mapleton Public Schools is internationally accredited and operates 21 distinct schools serving grades PK–12, each with its own specialized focus ranging from performing arts to expeditionary learning. This calendar includes 5 professional development days, 2 early-release or half days — useful to know when planning childcare. Standardized testing windows: PSAT – 9th Grade (No School Grades 10–12) (April 13); SAT – 11th Grade (No School Grades 9, 10, 12) (April 14); PSAT/CMAS Testing Day (No School Grades 9, 12) (April 15).

Also known as MNCASSD.

Schools in Mapleton School District No. 1 in the county of Adams & St

Mapleton Expeditionary School of the Arts (High)
Mapleton Early Career Preparation (High)
Global Leadership Academy (High)
Academy High School (High)
Adventure Elementary (Elementary)
Welby Community School of the Arts (Elementary)
Achieve Academy (Elementary)
Explore Pk-8 (Elementary)
Clayton Partnership School (Elementary)
York International (Other)
Monterey Community School (Elementary)
Meadow Community School (Elementary)
North Valley School for Young Adults (High)
Global Intermediate Academy (Middle)
Global Primary Academy (Elementary)
Trailside Academy (Elementary)
Preschool on Poze (Prekindergarten)
Mapleton Online (Other)
Valley View Innovation School (Elementary)
Performing Arts School on Broadway (High)

Mapleton School District No. 1 in the county of Adams & St 2026-2027 School Calendar

All schools

2026-07-04 — Independence Day (closed)
2026-08-04 to 2026-08-06 — Professional Development Day (closed)
2026-08-07 — Instructional Planning Day (closed)
2026-08-10 — Teacher Work Day (closed)
2026-08-11 — First Day for Grades 1-7, 9* (in session)
2026-08-12 — First Day for Grades 8, 10-12* / Kinder last names A-K* (in session)
2026-08-13 — First Day Kinder last names L-Z* (in session)
2026-08-18 — First Day for Preschool (in session)
2026-08-24 — MS Teacher PD - No School Grades 6-8 (Excluding Adventure and Welby) (closed)
2026-09-07 — Labor Day (closed)
2026-09-18 — Professional Development Day (closed)
2026-09-21 — Instructional Planning Day (closed)
2026-09-22 — MS Teacher PD - No School Grades 6-8 (Excluding Adventure and Welby) (closed)
2026-10-09 — District Homecoming (Early Dismissal) (partial)
2026-10-15 — End of Q1 (in session)
2026-10-16 — Professional Development Day (closed)
2026-10-19 — Instructional Planning Day (closed)
2026-11-06 — Teacher Trade Day (closed)
2026-11-09 — MS Teacher PD - No School Grades 6-8 (Excluding Adventure and Welby) (closed)
2026-11-23 to 2026-11-27 — Thanksgiving Break (closed)
2026-12-18 — End of Q2 (in session)
2026-12-21 to 2027-01-05 — Winter Break (closed)
2027-01-04 — Teacher Work Day (closed)
2027-01-05 — Professional Development Day (closed)
2027-01-06 — Students Return to School (in session)
2027-01-06 — MS Teacher PD - No School Grades 6-8 (Excluding Adventure and Welby) (closed)
2027-01-18 — Martin Luther King Jr. Day (closed)
2027-02-12 — Instructional Planning Day (closed)
2027-02-15 — Presidents' Day (closed)
2027-03-04 — End of Q3 (in session)
2027-03-05 — Professional Development Day (closed)
2027-03-08 — Instructional Planning Day (closed)
2027-03-22 to 2027-03-26 — Spring Break (closed)
2027-04-13 — PSAT 9th grade – No School for Grades 10, 11, 12 (in session)
2027-04-14 — SAT 11th grade – No School for Grades 9, 10, 12 (in session)
2027-04-15 — PSAT 10th, Science CMAS 11th – No School for Grades 9, 12 (in session)
2027-04-16 — Teacher Trade Day (closed)
2027-05-07 — Kinder Transition Day - No School for PK and K (closed)
2027-05-10 — Instructional Planning Day (closed)
2027-05-15 — District Graduation (in session)
2027-05-31 — Memorial Day (closed)
2027-05-26 — Last Day of School (Early Dismissal) / End of Q4 (partial)
2027-05-27 — Teacher Work Day (closed)
2027-06-19 — Juneteenth (closed)