Overview
- The federal education authority released the official 2026–27 calendar as a reference for all states while requiring 185 effective days of instruction for basic education.
- Aguascalientes issued a modified state calendar that restores class on the January 6 and May 5 holidays and shifts the spring vacation to coincide with the Feria Nacional de San Marcos.
- Both calendars preserve the total of 185 school days, with the state compensating by adding instructional days during dates the federal calendar marks as suspensions.
- The state will mostly keep classes during the federal Semana Santa break and only suspend instruction on March 25 and 26, then pause for state spring vacation in April.
- The divergence affects family planning, school logistics and interstate coordination because students in Aguascalientes will resume and suspend classes on different days than many other states.