Teachers can check any student account's login ID in the school.
After logging in to your teacher account at teacher.koobits.com, click 'Manage Class' on the top menu navigation > then select 'Manage Class' on the left sidebar menu.
Click on the class name, find the student's name in the list of all students in the class, and see the login ID under the Login ID column.
You may also search for the student's name or login ID. Just type in the student's name on the search box, then look for the student's name in the results.