This is a good thread to participate in to navigate this challenge: One Example of Engaging Parents of YECs.
This is text that I helped @JSmith craft for their mission statement. They have a different ministry than what you are proposing, but the same notes might be useful:
A Community of Teachers and Scholars. While our staff, board, and speakers all adhere to the essential doctrines of historic Christianity, we believe early exposure to a wide range of Christian thought helps students to work out their own Christian convictions. Additionally, students are better prepared for a university setting after being exposed to a wide range of answers to a wide range of questions while emphasizing sound Biblical hermeneutics, sound Biblical exegesis, and the centrality of Jesus to the Christian faith. Note: The word “university” is derived from the Latin universitas magistrorum et scholarium , which roughly means “community of teachers and scholars.”