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
  • 1 multipurpose turf field

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 (2019)
  • 30+ AP, UWHS and Honors Courses
  • National Merit Finalists: 12 (2014-2018)
  • National Merit Commended Students: 44 (2014-2018)

Student Body

  • 215 students in Middle School (Grades 6 - 8)
  • 646 students in High School (Grades 9 - 12)
  • 9 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

Beyond Academics

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


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Northwest Association of Independent Schools logo

Superintendent of Public Instruction logo

Washington Federation of Independent Schols logo