Eric Casillas

Background

About Eric Casillas

As the Director of Institutional Advancement and Chief Development Officer at San Marcos Academy, I am passionate about connecting people to purpose. I lead our development, fundraising, alumni engagement, and communications strategies with one clear goal: to advance the Academy’s Christ-centered mission and create lasting impact for generations of students. My work is rooted in faith, driven by stewardship, and guided by a desire to see generosity unlock transformation. From launching major giving campaigns and securing corporate partnerships to building donor pipelines and increasing enrollment through strategic initiatives, I thrive on aligning donor passions with institutional needs. I believe the most meaningful giving happens when donors can clearly see how their gifts are making a difference. That’s why I focus on transparency, authentic relationships, and clear outcomes in everything I do. I’m honored to serve at a place that has shaped my own family’s story, and I’m committed to helping others invest in something that will outlast us all. Let’s connect if you’re interested in fundraising, strategic advancement, Christian education, or collaborative partnerships that matter.