Display members with same taxonomy using Views
Create a view block of users and show all the required fields.

Add a contextual filter for school.

Now here ideally we need some way to dynamically get the school id
of the current logged in user. But we only get these kinds of values:

So in order to dynamically get the term id of the user's field. we can either write a custom hook hook_views_pre_view See its documentation and modify the correct $arg by loading the current user and getting the user's selected term for school.
or

Create a custom views argument plugin, or use this module : https://www.drupal.org/project/user_field_value