The overall effectiveness of improvement processes for shared provision is inconsistent across Wales and, in a minority of cases, leaders do not have robust quality assurance arrangements in place.
Mae effeithiolrwydd cyffredinol prosesau gwella ar gyfer darpariaeth ar y cyd yn anghyson ledled Cymru, ac mewn lleiafrif o achosion, nid oes gan arweinwyr drefniadau sicrhau ansawdd cadarn ar waith.