The Why // 02
In a middle class family, most middle school violins are rented. When it starts to crack or rattle, several adults interact to remedy the situation.
In tuition-free setting the school owns the inventory, and so the school is tasked with maintenance.
Baseball players do not sew their own mitts, and violin teachers do not fix violins, nor would they invest in the specialized tools needed running thousands of dollars.
Baseball practice or violin class is not the time to fix your your equipment. Contact time is for practice...for teachers to teach.