Is it legal to video record my classroom?

Now I'm not a guy of pranks or anything mischievous acts but I want to prove to my principle and parents why my grades are the fact. Now if I put my iphone in a box corner of the room record a normal day and show how wild it is. Is it legal to record? New Jersey public schools

I'm not a lawyer and I don't know about your state laws, but in most states it is illegal without the consent of the person(s) in the video. Usually the "talent" in the video have to sign a release form authorizing you to videotape them and for what purpose.