Ond neges bellach o waith yr OECD - a amlinellwyd yn eu hadroddiad Cymru 2014 - oedd y dylai datblygu arweinyddiaeth systemau fod yn un o brif flaenoriaethau diwygio’r system addysg. Rwy'n glir na wnaed digon gan Llywodraeth Cymru ar hyn.
But a further message from the OECD’s work – outlined in their 2014 Wales report - was that we should “treat developing system leadership as a prime driver of education reform.” I am clear that the Welsh Government has not done enough on this.