Relating to the scheduling of the first day of school for students by school districts.

HB 1591 would allow Texas school districts with 190,000+ students to begin instruction for specific campuses (not the entire district) before the fourth Monday in August, under certain conditions. It requires these districts to provide additional locally funded instructional days beyond state requirements, have campuses undergoing board-approved "comprehensive reform," and secure majority student approval at those campuses. The bill directly affects large school districts seeking flexibility for specific campuses while maintaining the general state requirement that most districts cannot start before the fourth Monday in August. It does not change the standard start date for most schools or the overall instructional day requirements.