The amount of expenditure retained centrally is deducted from the Schools Budget and the remainder is the Individual Schools Budget (ISB), ie funding delegated to schools.
Bydd y swm o wariant a gedwir yn ganolog yn cael ei dynnu allan o'r Gyllideb Ysgolion a'r gweddill fydd y Gyllideb Ysgolion Unigol , h.y.