Place it just before the grade reveal in your edit, then follow a good result with the Yaaaay Cheer and a bad one with Emotional Damage. Keep the grade moment central and let the reaction sound answer the question.
關於此聲音
This short 2.6-second voice clip has Paulo Guina asking, in Portuguese, whether he will get an A. His hopeful, slightly nervous delivery turns a simple school question into something instantly relatable. It feels anxious and funny at once, like waiting for a result you already suspect. The clip comes from Paulo Guina.