TRUBRIT --- no wonder your kid is 'difficult to deal with.'

You're sending him the message that every rule, every procedure
has to be to his liking in order for him to conform. Neither you
nor he are getting the idea that every institution, whether school,
work, or the local folk club, has a 'boss' and that person is
empowered to make decisions to which various other individuals
will be required to conform.

That's called 'life.' AKA 'the real world.'

People who insist upon having 'about ten meetings' to plead the
case of their little darling who wants to be the exception to the
(usually well-considered at the bottom of it) rules are in fact
one of the reasons that educators eventually become burned out
and take their considerable skills to some better-paying profession.
Indeed it's the fact that they even have to entertain 'about ten'
meetings that kills them. Decades ago, they would simply have said
'Mrs TRUBRIT, I've explained the rules to you, clearly and
unequivocally. Now I expect you to inform your son that he's to
take the bus. I have other matters to attend to, my decision is
final, and I won't be spending any further time on the matter.
Good day.'

You would do very well to tell the young lad to do as he's told,
remember that HE'S the student, not the boss yet, suck it up, get
his backside onto the bus to make the most of the free education
(and transportation) that 95% of the world would die for, and
prepare himself to be a productive member of society (at the
entry level). If, of course, he wishes to continue to have his
no-doubt voracious 18-year-old appetite sated on a regular
basis going forward.

Perhaps one day, when he is educated, his time will be 'too valuable'
to be spent with his buttocks on the seat of a school bus.

That day, I would venture, is at least several years in the future.