10th graders are people as well as 7 year olds. Neither have a legal right to bear arms. The rights enshrined in the first ten amendments are not absolute. You do not have the right to commit perjury or produce child porn, both examples of speech and press.
I think the founders would have differed on the notion of 16-year-olds having the right to bear arms.
Interesting theory - albiet completely false.
Committing perjury is hardly an example of free speech. You swear to tell the truth, yada yada yada, and then lie? That causes direct harm to another person thereby violating HIS rights - hence, it isnt a 1st Amendment issue. Remember, your rights end when your exercise of them infringes upon anothers rights.
Same thing with child porn. The perpetrators of that are committing a direct violation of a child and causing him harm. As you have no right to harm another, this is certainly NOT a protected expression of your right to a free press.
You want to try again?
You need to reread the Constitution, although I'm not sure you'll understand it this time either.