# US-Mexico 2026‑27 school calendar and policies > Live situation record from CLSTR: https://clstr.news/situations/us-mexico-202627-school-calendar-and-policies > Updated: 2026-08-06T13:48:47.000Z. Sources: 6. Developments: 2. In August 2026, California announced a reference start date of 12 August 2026 for the 2026‑2027 school year, with districts free to adjust within a 180‑day instructional requirement that runs to 10 June 2027. Mexico’s Secretaría de Educación Pública set its cycle to begin on 31 August 2026 and end on 9 July 2027, with teachers returning for a consultation program on 24 August 2026. The Mexican state of Tamaulipas also introduced an anti‑bullying curriculum for secondary schools, featuring weekly sessions on emotional self‑control and conflict resolution. Meanwhile, U.S. districts prepared for the new school year with operational changes. Clark County School District in Nevada adopted staggered start times—7:30 a.m. for middle schools, 8:30 a.m. for high schools, and 9:15 a.m. for elementary schools—prompting adjustments to traffic, police presence, and bus routes on 10 August. In California, the statewide Phone‑Free School Act, effective July 2026, requires schools to limit student cellphone use on campus, with enforcement varying by district. Both regions are providing resources such as free supplies and addressing challenges like student homelessness as families transition back to classrooms. ## Timeline ### 2026-08-06: US school districts roll out new start times and cellphone bans for 2026 Clark County, NV adopts staggered start times for 2026, while California enforces a new statewide cellphone ban in schools. 2 sources. https://clstr.news/cluster/us-school-districts-roll-out-new-start-times-and-cellphone-bans-for-2026 ### 2026-08-01: 2026-2027 school year start dates set in California and Mexico California sets Aug 12, 2026 start and June 10, 2027 end for its school year; Mexico's SEP schedules Aug 31, 2026‑Jul 9, 2027; Tamaulipas launches an anti‑bullying program for secondary schools in 2026‑2027. 4 sources. https://clstr.news/cluster/202627-school-calendars-set-for-california-and-mexico --- Cite as: US-Mexico 2026‑27 school calendar and policies. CLSTR, https://clstr.news/situations/us-mexico-202627-school-calendar-and-policies