If something is "handed back", it means that it is returned to someone who previously possessed it. Without more context, it is not clear whether your phrase is talking about tests being returned to the teacher after completion or returned to the students after marking (or even something else). Your use of brackets is incorrect, and there should be no space before a question mark.
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If something is "handed back", it means that it is returned to someone who previously possessed it. Without more context, it is not clear whether your phrase is talking about tests being returned to the teacher after completion or returned to the students after marking (or even something else).
Your use of brackets is incorrect, and there should be no space before a question mark. Write