| Value |
Category |
| 1 |
other resource books |
| 2 |
student edition of textbook |
| 3 |
teacher edition of textbook |
| 4 |
|
| 5 |
|
| 6 |
|
| 96 |
not applicable |
| 98 |
not admin. |
| 99 |
missing |
| 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.