| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. none, very poor quality, outdated, not relevant to grade | 297 |
11.5%
|
| 2 | 2. minimal, poor quality, dated, not fully relevant to grade | 338 |
13%
|
| 3 | 3. in between, average numbers, relevant, at least half the | 930 |
35.9%
|
| 4 | 4. well stocked, good quality, relevant to grade 1, all lear | 1026 |
39.6%
|
| Sysmiss | 1947 |