For over 55 years St. Mark's School has been providing a high-quality, competitive, and affordable education to children in the Treasure Valley. St. Marks is a non-profit 501(c)(3) organization (TaxID: 82-0200748) that serves over 350 children, age preschool through eighth grade, and is staffed by dedicated professional teachers focused on developing students to be critical thinkers, productive citizens, and leaders.

On February 11, 2023, St. Mark's will host its 39th  Annual Auction Fundraiser, “Seas the Day”, at the Boise Center. This wonderful evening builds both financial support for the school and a stronger community, with over 400 people in attendance and funds raised in excess of $175,000. This community-wide event features a silent auction, raffle, formal dinner, live auction, music, and dancing. All funds raised from the auction go to the St. Mark's Home and School Association. This money is used for programs that directly impact the positive learning environment for our student body. Some of the supported programs include paying for enrichment activities for the students such as; MOSS, STEMbus, assemblies, student retreats, art and music courses, curriculum resources, field day, teacher resources, and school family events.