As a result of the disruption due to coronavirus and the relaxation of reporting requirements as explained above, teacher assessment data was not collected in 2019 to 2020 and 2020 to 2021.
O ganlyniad i’r tarfu yn sgil y coronafeirws a’r llacio ar y gofynion adrodd, fel yr esbonnir uchod, ni chasglwyd data asesiadau athrawon yn 2019 i 2020 a 2020 i 2021.