Data will be used from the Official Statistics published by the Welsh Government on permanent and fixed-term exclusions from schools, which includes data on exclusions by ethnic background.
Caiff data eu defnyddio o’r Ystadegau Swyddogol a gyhoeddir gan Lywodraeth Cymru ar waharddiadau parhaol a rhai cyfnod penodol o’r ysgol, sy’n cynnwys data ar waharddiadau yn ôl cefndir ethnig.