College ROI Data: 30-year net present value of U.S. colleges and majors

Clean, citable tables on the lifetime financial return of U.S. colleges and majors: 30-year net present value by school and state, cohort-weighted ROI by major category, the out-of-state cost premium, and an AI-exposure score per major. The headline the data mints: picking a major swings mean lifetime ROI by ~$1.24M (Engineering +$1,132,553 vs Philosophy & Religious Studies −$111,915, cohort-weighted, FREOPP 2021) — and in several popular major categories the majority of graduates never break even. Derived by LE TEEN from FREOPP (2021, CC BY 4.0), NCES IPEDS (2023-24 Final, public domain), BEA Regional Price Parities (2023, public domain), Microsoft Research "Working with AI" (2025, CC BY 4.0), the Anthropic Economic Index (2025-09-15, CC BY), and Census ACS 2022 PUMS (public domain). Full methodology: le-teen.com/methodology. Canonical repository: github.com/thomasthinks/college-roi-data. Ships as tidy CSVs plus a Frictionless datapackage.json with typed schemas. CC BY 4.0. Also queryable as a free, keyless JSON API (le-teen.com/api, 640 endpoints) and via an MCP server for LLM tooling (college-roi-mcp on npm). Mirrored across Zenodo (hub), GitHub, Hugging Face, Kaggle, OSF, figshare, and OpenML.