Centennial School District School Calendar 2026-2027

At a Glance

CSD is a suburban school district with 6 schools. For the 2026-2027 school year, classes begin August 31 and end June 10. Centennial School District is located in Warminster, Pennsylvania, and serves the communities of Horsham, Ivyland, and Warminster Township in Bucks County. This calendar includes 1 professional development day, 13 early-release or half days — useful to know when planning childcare. Standardized testing windows: Standardized Testing Window (December 7–December 18); Standardized Testing Window (January 4–February 26); Standardized Testing Window (January 4–January 15); Standardized Testing Window (April 26–April 30); Standardized Testing Window (May 3–May 7); Standardized Testing Window (May 17–May 28).

Also known as CSD.

Schools in Centennial School District

William Tennent HS (High)
McDonald El Sch (Elementary)
Willow Dale El Sch (Elementary)
Davis El Sch (Elementary)
Klinger MS (Middle)
Log College MS (Middle)

Centennial School District 2026-2027 School Calendar

All schools

2026-07-01 — Window Opens for Grs. K-12 Inservice - Professional Learning (Virtual, Asynchronous) (closed)
2026-07-03 — All Schools & Offices Closed (closed)
2026-08-10 to 2026-08-25 — Window for Gr. K-12 Inservice - Teacher Prep Day (closed)
2026-08-19 to 2026-08-20 — New Teacher Orientation/Induction (closed)
2026-08-21 — Window Closes for Grs. K-12 Inservice - Professional Learning (Virtual, Asynchronous) (closed)
2026-08-26 — Grs. K-12 Inservice/Convocation/Building Day; Kindergarten Orientation 4:30 PM - 6:30 PM (closed)
2026-08-27 — Grs. K-12 Inservice - Professional Learning (closed)
2026-08-28 — No School/Offices Open (closed)
2026-08-31 — First Full Day for All Students K-12 (in session)
2026-09-03 — No School for Kindergarten Students / Rostering Day (closed)
2026-09-04 — All Schools Closed/Offices Open (closed)
2026-09-07 — All Schools & Offices Closed (Labor Day) (closed)
2026-09-21 — All Schools & Offices Closed (Yom Kippur) (closed)
2026-10-16 — Early Dismissal Grs. K-12; Grs. K-12 Inservice - Professional Learning (partial)
2026-11-02 — End of First Marking Period/Early Dismissal Grs 6-12; Grs 6-12 Grading Day/ K-5 Full-day (partial)
2026-11-03 — All Schools Closed; Grs. K-12 Inservice-Professional Learning (Election Day) (closed)
2026-11-19 — End of First Trimester (in session)
2026-11-20 — Elementary Schools Closed; Grs. K-5 Inservice Clerical Day; Grs. 6-12 Full Day of School (closed)
2026-11-24 — Early Dismissal Grs. K-5; Grs. K-5 Conferences; Grs. 6-12 Full Day of School (partial)
2026-11-25 — All Schools Closed; Grs. K-12 Conferences (closed)
2026-11-26 to 2026-11-27 — All Schools & Offices Closed (Thanksgiving) (closed)
2026-12-07 to 2026-12-18 — Keystones 8-12 (Winter #1) (in session)
2026-12-23 — Early Dismissal Grs. K-12;Grs. K-12 Inservice-Professional Learning (Virtual, Asynchronous) (partial)
2026-12-24 to 2027-01-01 — All Schools & Offices Closed (Winter Recess) (closed)
2027-01-04 to 2027-02-26 — WIDA Testing Window Begins* 1/4/27- 2/26/27 (subject to change) (in session)
2027-01-04 to 2027-01-15 — Keystone Testing Window (Winter #2) (in session)
2027-01-18 — All Schools & Offices Closed (Martin Luther King Jr. Day) (closed)
2027-01-21 — End of Second Marking Period (in session)
2027-01-22 — Grs. K-5 Full Day of School; Secondary Schools Closed; Grs. 6-12 Inservice - Transition Day (closed)
2027-02-12 — Early Dismissal Grs. K-12; Grs. K-12 Inservice - Professional Learning (partial)
2027-02-15 — All Schools & Offices Closed (Presidents' Day) (closed)
2027-03-05 — End of Second Trimester/Early Dismissal Grs. K-5 Grading Day; Grs 6-12 Full Day of School (partial)
2027-03-12 — Early Dismissal Grs. K-12; Grs K-5 Conferences; Grs. 6-12 Inservice - Professional Learning (partial)
2027-03-24 — End of Third Marking Period (in session)
2027-03-25 to 2027-03-29 — All Schools & Offices Closed (Spring Break) (closed)
2027-04-02 — Early Dismissal Grs. K-12; Grs. K-5 Prof Learning; Grs. 6-12 Grading Day (partial)
2027-04-06 — Window Opens for K-12 Inservice - Prof Learning (Virtual, Asynchronous) School Open (in session)
2027-04-19 to 2027-04-22 — 2027 Fine Arts Festival (in session)
2027-04-26 to 2027-04-30 — PSSA ELA Grs. 3-8 (in session)
2027-05-03 to 2027-05-07 — PSSA Math/Science Grs. 3-8 (in session)
2027-05-17 to 2027-05-28 — Keystone Exams (in session)
2027-05-18 — All Schools Closed / Offices Open (Snow make-up day) Election Day (closed)
2027-05-27 — Early Dismissal Grs. K-5; Grs K-5 Grading Day; Grs. 6-12 Full Day of School (partial)
2027-05-28 — All Schools Closed / Offices Open (closed)
2027-05-31 — All Schools & Offices Closed (Memorial Day) (closed)
2027-06-02 — Senior Awards Night at 6:00pm (in session)
2027-06-03 — Walk to Remember for Seniors (in session)
2027-06-07 — Early Dismissal Grs. 9-12; MBIT Graduation (Outside) (partial)
2027-06-08 — Early Dismissal Grs. K-12; Graduation Practice & Seniors Night of Reflections (partial)
2027-06-09 — William Tennent High School Graduation (Rain Date 6/10) Early Dismissal Gr. K-12 (partial)
2027-06-10 — Early Dismissal Grs. K-11; Grs. K-11 Last Day of School (partial)
2027-06-11 — Grs. K-12 Inservice - Professional Learning/Teacher Close Out/Transition Planning (closed)