Student’s Complaint Over Expulsion From Catholic High School Dismissed Under Ecclesiastical Abstention Doctrine: A Texas state appellate court held that the ecclesiastical abstention doctrine requires dismissal of a breach of contract lawsuit against a Catholic high school brought by a 16-year old student who was expelled and by his parents. “We conclude that St. Thomas’s status as a Catholic high school does not place it outside the ecclesiastical abstention doctrine’s reach. No less than a Catholic church, St. Thomas is a religious institution enjoying First Amendment protection for the free exercise of religion….”