AI Tutoring Pilot Cohort & Benchmark Comparator 171 Public Schools Pilot

Estimated Pilot Mean 482.0 +97.0 pts vs National
Effect Size (Cohen's d) +0.42σ PISA ~20-25 pts/0.1σ
Germany Benchmark Parity 96.8% -16.0 pts to 498
Cost Efficiency Ratio $0.43 Cost per PISA point gain

Math Score Distribution Shifts (PISA Scale)

Simulated pilot cohort kernel density vs baseline and international OECD targets

National Baseline (Mean 385)
171-School Pilot Cohort
Germany OECD Benchmark (498)
Sweden OECD Benchmark (502)

School Stratum Performance Deltas

Strata Group Schools Students Baseline Projected Mean Effect Size (σ) Benchmark Status