Reports of additional learning needs (ALN) or special educational needs (SEN) in maintained schools in North Wales by type of need, 2017 to 2022
Adroddiadau o anghenion dysgu ychwanegol (ADY) neu anghenion addysgol arbennig (AAA) mewn ysgolion a gynhelir yng Ngogledd Cymru yn ôl math o angen, 2017 i 2022