Debat bahasa inggris tentang pintar di mata pelajaran lain

I think, if student can't reach a good score in for example math. in math, he's so poor and he assumed himself that he is a stupid boy. but, in science, he's so great. everytime teacher asked a question he can answer it. no one can't see just by one side. if you can't understand that lesson, it's fine. everybody cannot understand every lesson. just try doing good. try more harder than last. just proof everybody who said to you that you're stupid. nobody in a whole world is stupid, they're just lazy.

thank you, i hope can help you :)