Average performance points in maintained secondary schools, September 2014 to August 2019, file type: ODS, file size: 114 KB
Pwyntiau perfformiad cyfartalog mewn ysgolion uwchradd a gynhelir, Medi 2014 i Awst 2019, Saesneg yn unig, math o ffeil: ODS, maint ffeil: 114 KB