sef y mwyafrif llethol o ysgolion yng Nghymru. Fodd bynnag, ni allai nifer fach o ysgolion fanteisio ar y buddsoddiad cychwynnol hwn oherwydd y costau peirianneg sifil sylweddol a oedd yn angenrheidiol.
This represents the vast majority of schools in Wales. However, a small number of schools could not benefit from this initial investment due to the significant civil engineering costs that were required.