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.
Sample characteristics by class.
| Class | Class A | Class B | Class C1 | Class D |
|---|---|---|---|---|
| Number of observations | 13 | 12 | 5 | 4 |
| Average data collection length | 3.1 h | 3.2 h | 2.2 h | 2.3 h |
| Total number of children (girls) | 17 (8) | 10 (4) | 12 (5) | 11 (7) |
| Total number of teachers | 3 | 2 | 3 | 3 |
