There are always 'hangers' on the jeepney at peak times
Many are non-payers. Street dwellers

To be honest, I've never ever seen students hanging on at the back. Neither here in Manila nor in Davao City. Well, not the ones in any uniform.

Maybe I live a sheltered life

No offence, just my experience.

Agreed though. Quite a few Jeepney drivers are reckless and careless. But, IMHO, nowhere near the majority.