I know this because, a student told me that the whole class likes working in pairs or groups.

Is this sentence correct or should it have this ; after because

There should be no punctuation in that sentence except the period at the end.

ok thanks

The sentence "I know this because, a student told me that the whole class likes working in pairs or groups" is incorrect and should not have a semicolon after "because."

The reason for this is that a semicolon is used to join two independent clauses (complete sentences) that are closely related and could stand alone as separate sentences. In this case, the sentence following "because" is not an independent clause, as it does not express a complete thought on its own.

To correct the sentence, you should remove the comma after "because" and use a comma after "me" to indicate a pause in the sentence: "I know this because a student told me that the whole class likes working in pairs or groups."