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· Public charity
Charitable purposes for the oster school
Your grants by size, and where they go.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue.
Each org by its size and your share of it — top-left is where you’re load-bearing
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
Warm introductions · Powered by PlinthPro
Find your warmest path to Oster Elementary School Home & School through people who sit on both boards. Search for your organization and Plinth traces the introduction across shared trustees and officers.
Every link is a documented governance overlap in public IRS 990 filings — not a personal network — and each hop carries its own confidence tier. Low-confidence or distant paths are held back rather than guessed.