Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Average age in years at each data collection time point.
| Grade | Fall | Spring | Fall | Spring | Fall | Spring |
| Year 2 | Year 3 | Year 4 | ||||
| Pre-kindergarten | 4.62 | 5.19 | 4.84 | 5.39 | N/A | N/A |
| Kindergarten | 5.27 | 5.85 | 5.50 | 6.04 | 5.46 | 5.96 |
| First grade | N/A | N/A | 6.09 | 6.66 | 6.41 | 6.93 |
Data reflect a 2-month bandwidth.
