What's planned
- Trends data: how far back each series goes, checked against the federal files.
Admissions go back to fall 2001, prices to 2000–01, average total cost and aid to 2008–09, and race and ethnicity to
- Earnings can't be trended. The spec also covers inflation adjustment, checks that fail loudly, and storage.
- Trends design: how much history each page gets. That means three Home facts, optional Explore columns, a "Then & now" chart in Compare, a "10 years" tile on profiles, and a detailed "Over time" section.
Both were built later the same day: see phase 1 and phases 2–3.