Accreditation

Accreditation
Cognia Accredited
U.S. accreditation, recognized globally — the same agency that accredits American public school districts.

Student-Athletes
NCAA-Approved Courses
Solomon courses are NCAA-approved, supporting student-athletes pursuing Division I and II collegiate athletics.

State Approval
Washington State Board of Education
Officially approved as a private school for the 2025–2026 academic year, affirming that SIS meets all state requirements for educational excellence.

Membership
WFIS Member School
A proud member of the Washington Federation of Independent Schools — a statewide network committed to excellence in private education.

College Board
Official AP Test Center
Authorized to administer Advanced Placement examinations on campus for our students and the wider community.
Center #480345
College Board
Official SAT Test Center
An authorized testing site providing reliable access to one of the world's most important college entrance examinations.
Center #47364
Federal Authorization
SEVP-Certified by DHS
Authorized by the U.S. Department of Homeland Security to issue Form I-20, enabling international students to enroll on an F-1 visa.