We considered using KS3 data as a proxy for a KS2 indicator however after analysing the data it was found that the KS3 and KS2 data showed little correlation.
Gwnaethom ystyried defnyddio data CA3 fel procsi ar gyfer dangosydd CA2 ond, ar ôl dadansoddi'r data, gwelwyd mai ychydig o gydberthyniad oedd rhwng y data CA3 a'r data CA2.