1. He became the captain of the class.

2. He became the president of the class.
3. He became the head of the class.
4. He became the leader of the class.
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Which ones are commonly used? What is the suitable name for the student who represents a class?

Usually the representative of the class is the class president or the class representative in the student council.

Out of the given options, the most commonly used phrases to describe a student who represents a class are "the class president" and "the class captain." These terms are often used interchangeably, depending on the region or educational system.

The suitable name for a student who represents a class can vary depending on the context and the educational institute. However, some common names for this role include class president, class captain, class representative, or class leader. It is essential to note that different schools or institutions might have variations in the specific title or responsibility of the student representing the class.