Frisco ISD McKinney ISD and Plano ISD Back to School Dates 2026 — What Parents Need to Know

Summer is flying by and back to school season in Collin County arrives earlier than many parents expect. Here are the key dates and everything you need to know for every major school district in the county. Frisco ISD: First day of school August 10 2026. Teacher preparation days run August 6 through 9 with campuses closed to students. Open house dates will be announced by individual campuses in late July. Supply lists are posted at friscoisd.org. Frisco ISD serves more than 67,000 students across its campuses. McKinney ISD: First day of school August 11 2026. McKinney ISD serves approximately 25,000 students. Supply lists and open house information will be distributed via campus newsletters in late July. Transportation assignments will be sent to families in early August. Full calendar at mckinneyisd.net. Plano ISD: First day of school August 12 2026. Plano ISD is one of the largest districts in Texas serving approximately 47,000 students. The district has announced expanded mental health counseling services this fall. Open house events are scheduled for the week of August 3. Details at pisd.edu. Prosper ISD: First day of school August 10 2026. Prosper ISD is one of the fastest-growing districts in Texas. Two new elementary campuses are opening this fall to accommodate growth. Registration for new students is ongoing at prosperisd.org. Celina ISD: First day of school August 11 2026. Celina ISD continues to experience rapid enrollment growth with a new elementary school opening this fall. Full calendar at celinaisd.com. Allen ISD: First day of school August 12 2026. Full calendar and supply lists available at allenisd.org. What to Do Right Now: Update your student's emergency contact information through your district's parent portal. Check for any required immunization updates as Texas requirements are enforced at registration. Order school supplies early as popular items sell out in late July at area stores. Tax Free Weekend: Texas tax-free weekend typically falls in early August and applies to most school clothing and supplies under $100. Check the Texas Comptroller website for exact dates.