C455 Prodigy

Jiaojiao was full of energy: "Why can't you do it? You're not dense; you can learn. We just need to wait for the college entrance exam details to come out. But we can't just sit around. Here's the plan: I'll tutor you, and let's try to take the high school graduation exam before the college entrance exam news is released. Having a high school diploma is a safer bet."

Worst case