Holy Trinity emphasizes individual growth through the teaching of Christian principles, morals, and values to a multi-cultural student body. Through the Sacred Studies curriculum, students learn to appreciate the world and their place in society. They also learn how to establish caring and effective relationships with others, both inside and outside the school community. While all Holy Trinity teachers assist with the development of each student's character, there are lessons each week devoted to Sacred Studies instruction and discussion. Additionally, all students attend and participate in a weekly Chapel.

The formal Sacred Studies program begins in Kindergarten. At each grade level, new concepts are introduced and previously introduced concepts are reinforced. By the time a student graduates, he/she will have a considerable foundation in life studies, values, self-esteem, Christian character, and awareness of Christian heritage, holidays, and Bible knowledge. The program is contemporary, adapted to students' needs and a changing community/world situation.