Each year, a group of school years will move from the Special Educational Needs (SEN) system to the new Additional Learning Needs (ALN) system.
Bob blwyddyn, bydd grŵp o flynyddoedd ysgol yn symud o’r system Anghenion Addysgol Arbennig (AAA) i’r system Anghenion Dysgu Ychwanegol newydd.