As a Catholic institution of learning, St. Andrew's School believes in the following:
1. Quality and relevant education that focuses on the formation and integral development of the whole person: physical, intellectual, affective, socio-cultural and spiritual; provides a worldview that relates to the growth experience of the learners; fosters excellence in curricular and co-curricular programs and activities; and adopts insights and scientific learning in the development of the behavioural sciences and educational technology that cater to the specific needs of the learners according to the different stages of human development.
2. Christian and Missionary formation that is committed to the nurturance of the desire for all learners "to go and proclaim the Good News to the ends of the earth" in word and deed; guided by the apostle St. Andrew to draw people to Jesus Christ and become "fishers of men"; inspired by Our Lady of Buen Suceso who constantly loves and protects Christ's flock; called to be in solidarity with the poor, the underprivileged, and marginalized communities; and dedicated to the care and sustenance of creation.
3. Religion as the Core of the Curriculum (RCC) in which the course of all learning programs and activities complement the body of knowledge of the Catholic Faith, upholding her values and beliefs as the wellspring of knowledge and truth; and serves as a paradigm of the student's growth in "wisdom, knowledge, and grace" before God and humanity.