In my school, the upper crust get a special key to their own special toilet I know in certain companies in the private sectors there is such a privilege too. 
Shuleni kwangu, Kundi la tabaka juu hupata ufunguo maalumu kwa choo chao maalumu Najua kwenye makampuni fulani ya sekta binafsi kuna upendeleo wa namna hiyo pia.