How are different types of school sector, size, location, medium of instruction, affected by the different factors and weightings applied in different local authorities?
Sut yr effeithir ar wahanol fathau o ysgolion, sector, maint, lleoliad, cyfrwng addysgu, gan y ffactorau a'r pwysoliadau gwahanol a gymhwysir mewn awdurdodau lleol gwahanol?