Lakeside is the academic anchor among Seattle's secular independent schools, with the highest selective-college placement rate in Washington — 31 Harvard / Princeton / MIT acceptances over 2022-2025 per PolarisList. Founded in 1919 (coed since 1971) and now serving roughly 900 students in grades 5-12, the institution carries an endowment north of $260M, among the largest of any US independent school. Bill Gates and Paul Allen met here in 1968 and used the Mothers' Club-funded teletype that connected them to a PDP-10; the alumni network still skews heavily toward technology, finance, and consulting.
The canonical peer set in published coverage is Overlake (Redmond, the rigorous AP-heavy Eastside equivalent), Eastside Prep / EPS (Kirkland, smaller and language-focused), University Prep / UPrep (Wedgwood, with selective-college placements often described as second only to Lakeside), and Seattle Academy / SAAS (Capitol Hill, urban and arts-forward). The Bush School in Madison Park is occasionally grouped here but reads as more experiential. Lakeside is generally regarded as the most academically demanding of the set — students consistently describe the Upper School workload as heavier than what they later encounter in college. Niche has recently dropped Lakeside to #3 in WA behind Overlake and EPS, partly attributable to a missing diversity score, though admissions consultants and the placement record still rank it first.
Matriculant SATs average around 1480 and ACTs around 33. The wooded north Seattle campus recently added the T.J. Vassar '68 Center for the Sciences and Humanities — 12 humanities classrooms and 8 science labs — reinforcing both its STEM lineage and liberal-arts core.
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