School Calendar For Sulphur Springs ISD 24 days ago The Sulphur Springs ISD School board of trustees approved the calendar for next year. Classes will begin on August 18, and the last day of school will be May 25. All classrooms operate between 7:50 – 3:30, with the tardy bell at 8:00 am. 2021-03-24 Dave Kirkpatrick Share Facebook Twitter Google + Stumbleupon LinkedIn