California Becomes First State to Mandate Late Start Times for Middle Schools and High Schools Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Gov. Gavin Newsom signed a law Sunday that bans most high schools from starting before 8:30 a.m. and most middle schools from starting before 8 a.m. ( AP Photo ) Produced by GBH, PRX and WNYC Studios