In January 2012, Marc joined the first Interim Executive Board in Wales at St Alban’s Primary School after it was placed in “special measures” by Estyn.
Ym mis Ionawr 2012, ymunodd Marc â’r Bwrdd Gweithredol Interim cyntaf yng Nghymru yn Ysgol Gynradd St Alban’s, wedi iddi gael ei rhoi o dan “fesurau arbennig” gan Estyn.