# Log

2026-10-30 P0: read TASK.md, wrote contract. passed.
2026-10-30 P1: audited data (clean, balanced 40×25), exclusion ledger with 0 removals. passed.
2026-10-30 P2: baseline OLS iid SE computed (in analysis.py). passed.
2026-10-30 P3: decision: CR1 cluster SE by school, t(G-1=39) for p/CI; ICC by one-way ANOVA on residuals; no randomness (random_seed null). passed.
2026-10-30 P4: clean re-run identical; consistency checks all PASS (state/checks.md). Gate run next.
2026-10-30 P4/P5: gate passed (receipt 20261030T043658.071070Z.json); report and claims written. Task complete.

spb/wp29_uqo