Democratic Kentucky Gov. Andy Beshear let a bill that allows parents to challenge sexually explicit school materials become law without his signature on Tuesday.

Senate Bill 5, sponsored by Republican state Rep. Josh Calloway, lets parents file complaints over school materials that depict sexual acts “in an obscene manner” or are “patently offensive to prevailing standards.” The legislation passed the state Senate in February and then the state House on March 15 before Beshear allowed the bill to become law.