In total 345 responses were received from headteachers and senior leaders in unique schools, which equates to approximately 23% of the total school population of maintained schools in Wales.
Derbyniwyd cyfanswm o 345 o ymatebion gan benaethiaid ac uwch arweinwyr mewn ysgolion unigryw, sy'n cyfateb i tua 23% o poblogaeth yr ysgolion a gynhelir yng Nghymru.