If for some reason you'd like to delete your class, it's very easy to do so.
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First, go to your Classes tab.
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Then, select the checkbox next to the name of your class. From the right fly-out menu, select Delete Classroom.
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An important thing to note is that deleting the classroom DOES NOT DELETE THE STUDENTS. Instead, it sends their accounts to "Unassigned", a section in the program where the students' data is still retained and they are still taking up a space in your account, but are not assigned to any classroom.
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Here is a short video that explains the process:
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