This suggests that younger pupils were more negatively impacted by the pandemic, whilst older pupils were better able to manage the change in learning situation.
Mae hyn yn awgrymu bod y pandemig wedi effeithio'n fwy negyddol ar ddisgyblion iau, tra bo'r disgyblion hŷn wedi gallu rheoli'r newid yn y sefyllfa ddysgu yn well.