Hi @rita1960,
Kindly note that currently Microsoft Q&A forum only supports posting in English.
Please consider editing your question into English so we can better understand it.
Thanks for your understanding.
Since your requirement is to use Teams for education purpose, I would suggest using Teams for Education instead of Teams for Business, as it is designed for education.
And since Teams for Education is not supported by Microsoft Q&A forum, please consider posting in the corresponding Microsoft Community for better support.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.