Schools can take the initiative to contact teachers or managers, ask the class teacher for instructions, resubmit the application for leave, and seek the help of superior managers without urging.

1. Take the initiative to contact the teacher or manager: you can take the initiative to send a private letter to the nailed teacher or manager to remind them to review your application for leave.

2. Ask the class teacher: If you don't know which teacher or manager to contact, you can directly ask the class teacher for help.

3. Re-submit the leave application: If your application is rejected or the review is overtime, you can try to re-submit the leave application and make sure to fill in the correct information.

4. Seek the help of the superior manager: If the above methods can't solve the problem, you can also report the matter to the superior manager for help.