Here are some more sentences on school rules I'd like you to revise. Thank you very much for all.

1) You are not allowed to change your sitting order unlesstold by your tutor.
You have to sit in the same place when you are in the linguistic laboratory.(how can express it?)
2)You must leave your rucksacks outside the computer laboratory and take only your exercise book with you.
3)If you are absent during a test, you'll have to catch it up at the end of the term (and not when we want to).
4) You should be quiet and take notes during an oral test.

1. Here is better phrasing:

Seating assignments are in effect in the linguistic lab. Do not change seats unless your tutor instructs you to do so.

2. fine

3. If you are absent during a test, you need to take a make-up test when assigned, before the end of the term.

4. fine

1) Consider revising the sentence as follows:

- To express the rule about sitting order in the linguistic laboratory, you could say, "In the linguistic laboratory, students must remain in their assigned seats unless directed otherwise by their tutor."

2) The sentence seems clear, but you might consider rephrasing it for better clarity and conciseness:
- "In the computer laboratory, students must leave their rucksacks outside and only take their exercise books with them."

3) The sentence is clear, but you can make a slight rephrasing to improve fluidity:
- "If a student is absent during a test, they will have to make it up at the end of the term, rather than at a personally convenient time."

4) The sentence appears fine, but you could enhance it by providing more specificity:
- "During an oral test, students are expected to maintain silence and focus on taking notes."