Dr. Dan Zoeller, the longest-serving principal at Trinity High School, will retire in June 2026 after nearly 35 years at the school. Zoeller began working at Trinity in 1991 as a coach and teacher of English, creative writing, religion, and film studies. He later became activities director in 2000 and created the school's House System after participating in a Fulbright Exchange in Great Britain. This system has since been used as a model by other schools across the country.

In 2004, Zoeller was named principal. In 2012, he introduced the block schedule, which is similar to a college schedule. According to the school, this change led to more academic rigor, more time for hands-on projects, and more elective options for students.

James Torra, Trinity’s president, said in a press release, “Dr. Zoeller has been much more than a principal. His impact on our school and the community is immeasurable, and it will be felt for generations. The Trinity community has been blessed by his vision and leadership.”

The press release also stated, “Dr. Zoeller’s leadership and dedication have been instrumental in strengthening Trinity’s academic excellence, student-centered culture, and national reputation for innovation. Serving as principal since 2004, he leaves behind a powerful legacy of educational leadership grounded in faith, character, and commitment to student success.”

Trinity High School was established in 1953 and currently has an enrollment of 1,200 students. The search for a new principal is underway, with the next principal expected to begin on July 1, 2026.