This shows what “on track toward the 18-year floor” looks like at four developmental bands:
18 months–5 years
6–9 years
10–13 years
14–18 years
These are indicators, not benchmarks. They are not pass/fail. They help me see patterns, support needs, and long-runway skills that can’t be crammed at 17.
Domain-by-domain developmental notes
On-track indicators
Red flags worth investigating
What each band is actually building toward
Why some skills must start early, and others can come later