1: As the saying goes, seeing is believing, but listening is empty. I suggest you go on a field trip. After all, it's much better to feel by yourself than to listen to others.
2. You can also feel the atmosphere of students' study, the environment of students' study and so on.
3. You can also talk with students to learn more information.
4. Find a competent teacher, or ask if there is an employment agreement. You can also audition for a period of time and decide where to go according to your feelings.
I hope my advice can help you. No matter what the result, you should study hard by yourself. I wish you success in your studies!