The context of the following conversation is His friends all failed the science test but Jordan got an A.  Jordan had a word of advice for them.:
Jordan says My friends all failed the science test but I aced it..
The friend responds You must be really smart..
Jordan responds Not really.  I just study more.  I didn't go out partying the night before..
The friend responds That helps.  Maybe if they took the test seriously, they would have passed.,.
Jordan responds That's what I told them.  They need to get their sleep before the exam so they can think..
The friend responds That's a good word of advice..