Secondly, whether it is stable or not depends on whether you are a contract worker or an office worker.

That depends on your purpose. Some school libraries lack management and manpower, and it is very tiring to organize them. But most schools are still relatively relaxed.

Finally, it depends on your purpose, whether you want to use it as a stepping stone for further study, or just want to find a relaxed and stable job, and then measure whether you are suitable for this job.

Good luck!