Barnodd Estyn yn ystod ei arolygiad ym mis Mai 2011 fod perfformiad gwasanaethau addysg yr awdurdod lleol yn anfoddhaol. Barnodd hefyd nad oedd y rhagolygon o ran gwella yn foddhaol. O ystyried y gwendidau difrifol hyn, credai Estyn fod angen mesurau arbennig mewn perthynas â’r awdurdod hwn.
During its May 2011 inspection, Estyn found the performance of the local authority education services to be unsatisfactory and also found the authority’s prospects for improvement to be unsatisfactory.  In light of these very serious shortcomings, Estyn believe that special measures were required in relation to this authority.