St. Nicholas School, Capitol Hill, Seattle, Washington. A non-sectarian private school for girls (grades 1-12), SNS merged with all-boys Lakeside School in the 1970s. The historic building is located next door to Saint Mark's Episcopal Cathedral, Capitol Hill, Seattle, Washington, USA. The building subsequently housed a large part of the Cornish College of the Arts, and is now home to the Gage Academy of Art and the Bright Water School.