Every image of this kid has had his dread locks clean and neat. This isn't some hippy dude that's not bathing. If he had a BO problem, the school would just cite him on that.
How many Black folks with locs have you been around? Because they still regularly wash and oil their hair. Locs are actually considered a protective style for Black hair.
That's unfortunately the problem with people you're hanging out with. If their locks smell like shit it will not be better without them, they are just unhygienic.