NISD is a local school district with 11 schools. The first day of school is August 12. Nacogdoches ISD was formally incorporated on June 10, 1903, making it one of the oldest continuously operating school districts in East Texas. The calendar sets aside 2 additional days (February 15–March 29) that may be used as weather makeup days if needed. This calendar includes 5 professional development days, 3 early-release or half days — useful to know when planning childcare. Standardized testing windows: Standardized Testing Window (November 30–December 11); Standardized Testing Window (April 5–April 29); Standardized Testing Window (June 14–June 25).
Also known as NISD.