Summary of absenteeism at school before and during the coronavirus (COVID-19) pandemic: September 2014 to August 2022, file type: ODS, file size: 24 KB
Crynodeb o absenoldeb yn yr ysgol cyn ac yn ystod y pandemig coronafeirws (COVID-19): Medi 2014 i Awst 2022, math o ffeil: ODS, maint ffeil: 26 KB