Holiday Closing: all county offices are closed Monday, May 30, for the Memorial Day holiday, and will re-open Tuesday, May 31. This includes parks offices, public works, courts and all other administrative offices.
The following is a list of Independent School Districts (ISDs) located entirely -- or partially – within Collin County.
Allen ISD
Anna ISD
Bland ISD
Blue Ridge ISD
Celina ISD
Community ISD
Farmersville ISD
Frisco ISD
Gunter ISD
Leonard ISD
Lovejoy ISD
McKinney ISD
Melissa ISD
Plano ISD
Princeton ISD
Prosper ISD
Rockwall ISD
Royce City ISD
Trenton ISD
Van Alstyne ISD
Whitewright ISD
Wylie ISD
