John Therry Catholic High School was established in 1981 at Rosemeadow. Our school mission statement is "To create a learning environment based on Catholic faith which empowers students and staff to achieve their potential as individuals in the wider community". We strive for graduates of John Therry to be confident and courageous young men and women who make a positive difference in their world. Our goal is spiritual, sporting, social and academic excellence for all our students. Our Graduate Statement which was developed by the school in 2009 and is displayed in all classrooms captures these aspirations for our students.
John Therry is a co-educational, comprehensive Diocesan Catholic High school in the Marist tradition with 1019 students enrolled as at the February Census in 2017. John Therry is a six stream Catholic High School with an eight stream group in Year 8. John Therry draws its students from the parishes of Rosemeadow, Campbelltown, Appin and Ruse. However, students enrol from outlying areas such as Picton and The Oaks and in excess of 20 State Primary schools within the Macarthur region.