Teacher Verification Problems when trying to buy Mac Studio online.

We are all end users just like you so there is not too much we can do to assist. Apple is the hosts to these user to user forums however they do NOT read or participate in the forums. To reach Apple, navigate to the on-line store and there should be a phone number you can use to call Apple's on-line store so you can speak to an advisor. If you cannot locate that number then simply call AppleCare and they will direct you, you can find the number by clicking AppleCare Contact Info and then selecting your country and the number will appear. Explain your needs to the AppleCare advisor and they can assist in transferring the phone call to the correct area.

By the way, it also may be possible that your teaching credential is not recognized in Apple's ecosystem, I am not trying to indicate that with any surety, it's just a possibility. You will really need to speak to someone with first hand knowledge and I also strongly recommend reading (and fully understanding) the Terms & Conditions to Apple's Educational discount program in China.