ROSWELL—Frank Moore, the founding principal of Blessed Trinity High School, announced in a letter to the school community that he would retire from his position at the end of his contract on June 30, 2016.

Frank Moore

In his letter, he said, “These 16 years at Blessed Trinity have been the most exciting and rewarding of the 44 years I have spent in Catholic secondary education. The accomplishments of the teachers and students here have far exceeded the time line of expectations I laid out in the summer of 2000.”

Moore became principal in 2000 when the high school was established by Archbishop John F. Donoghue, welcoming 164 freshman and 55 sophomores, and served by 35 employees. Today, Blessed Trinity has 971 students and 112 employees, and the school has become known for “Catholic identity, athletic achievements and a talented fine arts department” under Moore’s leadership.