St. Anthony is one of the older Catholic elementary schools in South King County, with the first school building dedicated September 4, 1927. The downtown Renton parish school enrolls about 360 students PreK through eighth grade with a 17:1 student-teacher ratio, sitting in the same competitive set as other South King County Catholic K-8s: St. Madeleine Sophie (Bellevue), St. Vincent de Paul (Federal Way), and St. Philomena (Des Moines). Tuition for the highest grade runs around $9,550, modestly below the Seattle-proper Catholic K-8 average.
The program pairs core academics with weekly PE, art, music, and technology, and the school markets tuition assistance as a way to serve families across income levels — a pitch that resonates more in Renton's mixed-income geography than at the more affluent Eastside Catholic K-8s. Students have maintained a long-running partnership with St. Anne's Parish in Haiti, organized after the 2010 earthquake and covered locally by the Renton Reporter.
The campus has been expanded several times since 1927, with the first major addition in 1955. As an Archdiocese of Seattle parish school, St. Anthony's enrollment is still anchored by St. Anthony Parish but draws students from across south King County. Renton's Catholic education ecosystem is small relative to Seattle's, so families weighing this option often compare against secular Christian options like Renton Christian rather than other Catholic K-8s.
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