A first-grade teacher in Nashville, Tennessee, claims that he was threatened with termination and reassigned to a new position after requesting religious accommodations to avoid reading books to children that promote same-sex marriage, which would have conflicted with his beliefs about marriage and sexuality.

Eric Rivera is a devout Christian who taught first-grade students at KIPP Antioch College Prep Elementary School, according to a Wednesday statement from the First Liberty Institute, a nonprofit public interest law firm.  KIPP is a public charter school that operates under the Tennessee Public Charter School Commission.