In the Effects of chewing gum on the stress and work of university students study at Cardiff university showed with 72 students over 2 weeks students who chewed gum felt more relaxed and less stress and tired and more able to do school work. many other studys show this.
Chewing gum will also allow students to fidget less and concentrate more.
Students should chew discreetly and dispose of it in the bin and not on school or public property (except bins).
Everything here is backed by multiple studys.