EC at a Glance



Located on 50 acres in Sammamish, Washington, our beautiful state-of-the-art campus facilities, built in 2008, is an optimum learning environment. Amenities include fully-equipped science labs, integrated classroom technology and dedicated gathering areas for student collaboration. The campus is also home to the St. Francis of Assisi Chapel, a digital learning library and much more.

  • Founded in 1980
  • 10 science labs
  • 12,000-volume library
  • 2 gymnasiums
  • 2,000-seat stadium
  • 2 multipurpose turf fields
  • 1 central courtyard off the Commons cafeteria

Accreditation and Membership

  • Accredited by Northwest Association of Independent Schools (NWAIS)
  • Approved as a Catholic School by the Archdiocese of Seattle
  • Approved by the State of Washington’s Office of Superintendent of Public Instruction (OSPI)
  • Member of the National Association of Independent Schools
  • Member of the Washington Federation of Independent Schools (WFIS)
  • Member of the National Middle School Association

Academic Excellence

  • Middle School and High School faculty: 68
  • Faculty holding advanced degrees: 62%
  • Faculty and staff awarded National Board Certification: 15
  • Student-Teacher Ratio: 14:1
  • Average class size: 19
  • 99% of students are college-bound graduates (2022)
  • 30+ AP, UWHS and Honors Courses
  • National Merit Finalists: 12 (2018-2022)
  • National Merit Commended Students: 44 (2018-2022)

Student Body

  • 223 students in Middle School (Grades 6 - 8)
  • 602 students in High School (Grades 9 - 12)
  • 8 students in High School Options Program
  • 54% Roman Catholic
  • 46% other faith traditions

High School Sports

Eastside Catholic is proud to offer 22 varsity athletic teams with many junior varsity and JV-C level teams. Most EC teams participate in the WIAA 3A Metro League.

  • 22 athletic teams
  • 19 Metro League championships
  • 12 WIAA academic state championships
  • 9 state championships
  • 19 individual student-athlete champions

Middle School Sports

  • 7 Catholic Youth Organization (CYO) athletic programs including cross country, basketball and track
Eastside Catholic students high-fiving outside


National Association of Schools logo


Northwest Association of Independent Schools logo

Superintendent of Public Instruction logo

Washington Federation of Independent Schols logo

Beyond Academics

EC combines academic excellence with enrichment activities, sports opportunities, leadership training and faith-based values that last a lifetime.