It's easy to limit exactly who can access your Tests in ClassMarker.
When giving Tests via Groups, you can limit exactly when and how many times a Test can be taken.
Only members you register into a Group can access the Test/s you have assigned to that Group.
When giving Tests via Links, you can set exactly when and how many times a Test can be taken, as well as select to password protect the Test.
You can use a common password for all users, or you can create an Access List, which allows you to create unique codes (one for each Test taker), which they will use to access your Test. Learn more about Access lists.
Set IP Restrictions across both Groups and Links to limit Test access from specific locations.
View more Settings available to you when assigning Tests.