La Vernia, Texas—population 1,200—has struggled to emerge from a cloud that covered the sports-obsessed town after rape allegations involving its most gifted athletes went public almost one year ago.

Now, a new family has filed a lawsuit against the school district, claiming that a La Vernia coach witnessed and ignored two violent sexual assaults suffered by their son while he was on its basketball team.

The complaint alleges that a boy, listed as John Doe, was sexually assaulted more than 30 times between October 2016 and February 2017 in the La Vernia High School locker room, a shower at the school, during basketball practice, at other schools’ gyms, before and after basketball games, and after team dinners at other families’ homes. …