| Value |
Category |
| 1 |
NATIONAL CENTER STAFF |
| 2 |
TCH FROM SCH,BUT NOT TCH OF SELECTED CLS |
| 3 |
OTHER |
| 9 |
OMITTED OR INVALID |
| 11 |
.A |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.