The study considers how successful all-age schools are and whether standards are better in an all-age school compared with separate secondary and primary schools.
Mae'r astudiaeth yn ystyried pa mor llwyddiannus yw ysgolion pob oed ac a yw safonau'n well mewn ysgol pob oed o gymharu ag ysgolion uwchradd a chynradd ar wahân.