enroll the class vs enroll in the class

Some examples from the web:

• Enroll in or unenroll from a class. Before you can receive assignments, class announcements, recommended music, or feedback from your teacher within ...
• If after allowing students to enroll the class needs to be cancelled, do the following: a. Select the Cancel if Student Enrolled check box. b. In the Class Status drop ...
• If less than three (3) students enroll, the class is subject to cancellation. We encourage each student to review the class session dates and times offered to ...
• Then we attempt to “over enroll” the class - hopefully getting at least 50 to 60 students to enroll. The students and parents are told in advance that this is the ...

Some examples from the web:

• You should only enroll in the class once. After enrolling, you might also need to provide an access code to verify payment for the class. You can click Log in now  ...
• Many students drop classes after the first meeting, at which point other students may enroll in the class or advance on the wait list. Sometimes departments ...
• Aug 4, 2015 ... When the lecture or sections are closed (full). If there is space in the lecture, but you cannot find an open section, you cannot enroll in the class.
• Click the "Register" button at the bottom of the page to enroll in the class. 14. The next screen will show you the class you just enrolled in and any other classes ...