Riverdale High School Riverdale is located at 9727 SW Terwilliger Blvd., Portland, OR 97219. Download a PDF of this document View classes at Sunset High School View classes at OES Return to main Classes & Workshops page To learn more about the classes available at Riverdale, go here: http://www.saturdayacademy.org/Classes/AllClasses/ByLocation/tabid/112/Default.aspx#RiverdaleHighSchool