When creating a Microsoft Teams meeting/class all the attendees are automatic set as an presenter. This gives every attendee the privilege to mute others kick them out from the meeting or take over the meeting and start presenting.
To prevent this scenario here are the step you must do:
Go to "Meeting Options"
From Teams calendar you can also select Meeting options, but you have to send the meeting first. It is after you sent away the meeting invite you can see Meeting Options in the meeting.
Change the settings for "Who can present?" to "Only Me"
You may also change the role during an active meeting by doing this:
In the People pane select select More options (…) next to the person you want to make an attendee, then select Make an attendee. You will get an warning first, select Change on that to perform the change.
To know more on the roles of Presenter and attendee please read the link here: Teams meetings: Presenter and attendee roles