| Code | Meaning |
|---|---|
| O | Open, S T W* |
| B | S T W |
| A | |
| P | Private, |
| P+ | Private+, |
| P++ | Private++, |
| TS |
Top Secret, |
| C | Chemistry |
| i | Internet |
| I | Important |
| LS | Leaf-Sea! (Inside) |
| LS+ | Leaf-Sea! + (Inside+) |
| S | Saved |
| T | Test or 326 |
| W | Teacher |
| No teacher |
* S = student, T = teacher, W = Willson Wang