The percentage of pupils achieving Level 4+ in Welsh second language increased each year from 2011 to 2018, but fell by 0.4 percentage points in 2019, to 80.9%.
Cynyddodd canran y disgyblion a gyflawnodd lefel 4+ yng Nghymraeg ail iaith ym mhob blwyddyn o 2011 i 2018, ond gostyngodd 0.4 pwynt canran yn 2019, i 80.9%.