I was wondering how I could use NLP for school like How could I get a teacher to give me a good grade on an assignment or When the class is

laughing could I snap my fingers so that everytime I snap my fingers the whole class laughs or something like that?

Sorry man....you'd need EVIL magic for that....

Yes you could do i am in high school and i do pretty much that kind of thing for example whenever i say something funny i always give the person i am talking to a high five so whenever i want him to be happy or laugh i just need to give a high five.

Tip: When people laugh it gives you temporary access to their subconscious (You could say anything and it will go straight in) so when someone is laughing you could slip some embedded commands in there.

Tip 2: About the snap your fingers to make the whole class laugh thing yes it is possible. But your fingers snapping don't make enough of a sound so why don't you clap your hands instead no one will notice because they are laughing.