Hamlin Robinson School is approved by the State of Washington Office of Public Instruction (OSPI), as an independent, not-for-profit, coeducational day school for primary through high school aged students.

HRS is accredited by the following organizations:

Pacific Northwest Association of Independent Schools (PNAIS)
National Association of Independent Schools (NAIS) 
Northwest Accreditation Commission (NWAC)

HRS is member of various community organizations, including:

Washington State Federation of Independent Schools (WFIS)
Washington Branch of the International Dyslexia Association (WABIDA)
Capitol Hill Chamber of Commerce (CHCC)
Central Area Chamber of Commerce (CACC)

HRS is a Strategic Partner of the Slingerland Institute for Literacy