There are also practical issues related to staff capacity in securing and cleaning the premises and ongoing maintenance costs associated with out-of-school hours.
Mae yna faterion ymarferol hefyd o ran capasiti staff mewn perthynas â diogelu a glanhau’r safle, a chostau cynnal a chadw rheolaidd sy’n ymwneud â gweithgarwch y tu allan i oriau’r ysgol.