Secondary schools that chose to introduce the curriculum to Year 7 early also started in September 2022; with the curriculum being mandatory for Years 7 and 8 from September 2023.
Gwnaeth ysgolion uwchradd a ddewisodd gyflwyno'r cwricwlwm i Flwyddyn 7 hefyd ddechrau'r broses ym mis Medi 2022; gyda’r cwricwlwm yn orfodol i Flwyddyn 7 a Blwyddyn 8 o fis Medi 2023.