OMSD is an urban school district with 33 schools. For the 2026-2027 school year, classes begin August 5 and end May 20. This calendar includes 4 early-release or half days — useful to know when planning childcare.
Also known as OMSD.
Schools in Ontario-Montclair School District
Arroyo Elementary (Elementary)
Berlyn Elementary (Elementary)
Bon View Elementary (Elementary)
Corona Elementary (Elementary)
Richard Haynes Elementary (Elementary)
De Anza Middle (Middle)
Del Norte Elementary (Elementary)
Edison Elementary (Elementary)
El Camino Elementary (Elementary)
Elderberry Elementary (Elementary)
Euclid Elementary (Elementary)
Hawthorne Elementary (Elementary)
Ray Wiltsey Middle (Middle)
Kingsley Elementary (Elementary)
Lehigh Elementary (Elementary)
Mariposa Elementary (Elementary)
Mission Elementary (Elementary)
Monte Vista Elementary (Elementary)
Moreno Elementary (Elementary)
Ramona Elementary (Elementary)
Serrano Middle (Middle)
Sultana Elementary (Elementary)
Vernon Middle (Middle)
Vina Danks Middle (Middle)
Vineyard Elementary (Elementary)
Oaks Middle (Middle)
Howard Elementary (Elementary)
Lincoln Elementary (Elementary)
Buena Vista Arts-Integrated (Elementary)
Central Language Academy (Elementary)
Montera Elementary (Elementary)
Vista Grande Elementary (Elementary)
Online Academy (Elementary)
Ontario-Montclair School District 2026-2027 School Calendar
All schools
2026-07-03 — Independence Day (observed) (closed)
2026-07-30 to 2026-08-04 — Teacher Preparation Days (closed)
2026-08-05 — First Day for Students (in session)
2026-09-07 — Labor Day (closed)
2026-10-05 — Non-School Day (closed)
2026-11-11 — Veterans Day (closed)
2026-11-23 to 2026-11-27 — Thanksgiving Break (closed)
2026-12-18 to 2027-01-01 — Winter Break (closed)
2027-01-18 — Martin Luther King Jr. Day (closed)
2027-02-08 — Lincoln's Birthday (closed)
2027-02-15 — Presidents' Day (closed)
2027-03-29 to 2027-04-02 — Spring Break (closed)
2027-05-20 — Last Day for Students (in session)
2027-05-31 — Memorial Day (closed)
2027-06-18 — Juneteenth (observed) (closed)
Elementary Schools
2026-11-06 — Elem. School Min. Day - Report Card (partial)
2026-11-16 to 2026-11-20 — Elementary School Parent Conference (closed)
2027-03-05 — Elem. School Min Day - Report Card (partial)
2027-03-22 to 2027-03-26 — Elementary School Parent Conference (closed)
2026-10-30 — 1st Trimester : 61 days (in session)
2027-02-26 — 2nd Trimester: 65 days (in session)
2027-05-20 — 3rd Trimester: 54 days (in session)
Middle Schools
2026-09-28 to 2026-09-30 — Middle School Parent Conference (closed)
2026-10-01 to 2026-10-02 — Middle School Parent Conference (closed)
2026-12-17 — Middle School Min. Day - Report Card (partial)
2027-03-01 to 2027-03-05 — Middle School Parent Conference (closed)
2027-04-30 — Middle School Min. Day - Report Card (partial)