En Es

Educates for
the Mission

Empowering the People of God to Serve the People of God

OST equips for effective ministry and witness to Jesus so that all who are called can serve their own congregations and denominations.

OST Community

Fierce and Tender Wisdom: Exploring Wild Mercy

Fierce and Tender Wisdom: Exploring Wild Mercy

Discover wisdom from women mystics across traditions, fostering contemplative listening, creative expression, and spiritual connection.Read More »
Transformative Discipleship: Uncovering the Deeper Secrets of the Gospels

Transformative Discipleship: Uncovering the Deeper Secrets of the Gospels

Join Fr. Ron for a transformative 3-day retreat exploring deeper discipleship, spiritual growth, and living out the Gospel with purpose.Read More »
Tolkien as Apologist to the Imagination

Tolkien as Apologist to the Imagination

Discover how Tolkien’s stories reveal deep theological truths and explore faith through imagination.Read More »
Inspired and Empowered to Thrive | Women’s Conference

Inspired and Empowered to Thrive | Women’s Conference

Empowering women through healing and spiritual growth, Sankofa’s 2025 Women’s Conference features keynote Dr. Phillis Isabella Sheppard.Read More »

Academic Degrees

Preparing Pastoral Leaders

Our faculty is dedicated to the teaching of pastoral ministry rooted in theology and spirituality. For over 120 years, OST has been forming leaders to preach the Gospel to the poor and most abandoned.

Community of Missionary Disciples

OST opens its doors to Christians from all denominations to access theological education. We are an international, intercultural, bilingual, and ecumenical community of learning.

Rooted in Catholic Tradition

Founded in 1903, with a mission dedicated to the teaching of spirituality, diversity, and ministry, OST continues to provide theological education that transforms lives. In 1849, the Missionary Oblates of Mary Immaculate (OMI), an international apostolic religious congregation of priests and brothers, came to San Antonio. Their mission is to preach Christ’s message and serve the people of God, especially the poor and marginalized.