Local authorities have discretion to distribute the remaining 30% so that they can take account of individual school circumstances, such as the size and condition of school buildings.
Mae gan awdurdodau lleol ddisgresiwn i rannu'r 30% sy'n weddill fel y gallant ystyried amgylchiadau ysgolion unigol, megis maint a chyflwr adeiladau ysgolion.