On March 26, 2020, Zoom released an update to the default screen sharing settings for Education accounts, in an effort to increase security and privacy for meetings. This update changed the default sharing setting to “Host Only” at the account level. This setting gives hosts the sole permission to share content within their meetings by default.
Hosts still have the ability to allow participants to share their screen during a meeting and edit their default settings to allow participants to share in all meetings. Click here for instructions.