First of, if an when there is an approval for use with children it will be the decision of the parents and their doctor whether or not to take the vax. NOTHING to do with the constitution.
The same kind of decision that, coincidentally, counts for shit with right to life proponents.
And public schools will be within their rights in denying attendance to the unvaxed, just as they've done all along, fpr the public good.
You've heard the phrase 'your right to throw your fist end with my nose'?
There has always been a balancing of rights that is NOT dependent on how any one individual 'feels' about a matter.
Public health is one of those balancing acts that will prevail on the publics' behalf