MISD is an urban school district with 31 schools. For the 2026-2027 school year, classes begin August 17 and end June 2. The calendar sets aside 2 additional days (October 12–February 15) that may be used as weather makeup days if needed. This calendar includes 5 professional development days, 5 early-release or half days — useful to know when planning childcare. Standardized testing windows: Standardized Testing Window (November 30–December 11); Standardized Testing Window (February 15–March 26); Standardized Testing Window (February 15–March 26); Standardized Testing Window (March 15–April 16); Standardized Testing Window (April 5–April 16); Standardized Testing Window (April 12–April 23); Standardized Testing Window (April 19–April 30); Standardized Testing Window (June 14–June 25).
Also known as MISD.