WCSD is a suburban school district with 13 schools. For the 2026-2027 school year, classes begin September 8 and end June 24. Williamsville Central School District operates its own planetarium — the Williamsville Planetarium — which serves school groups and offers programming to students across the district. The calendar also notes several religious observances (Yom Kippur / Superintendent Conference Day, Eid al-Fitr / Superintendent Conference Day, Eid al-Adha / Superintendent Conference Day) for awareness — school stays in session on these days. This calendar includes 4 early-release or half days — useful to know when planning childcare. Standardized testing windows: Regents Examination Period (January 26–January 29); Regents Examination Period (June 15–June 24).
Source: Williamsville Central School District
Also known as WCSD.