Antonian College Preparatory High School is an co-educational Catholic high school for students grades 9 through 12.

It is located in Castle Hills, Texas and is part of the Roman Catholic Archdiocese of San Antonio.

[citation needed] The Antonian campus rests on 30 acres (12 ha) in Castle Hills, Texas.

It has 39 classrooms, science laboratories, kitchen, cafeteria, auditorium, technology lab, and library.

This article about a high school in Texas is a stub.