Mae cyfran fach o ysgolion wedi gwneud defnydd o ddatgymhwyso Rheoliadau Newid Amserau Sesiynau Ysgol (Cymru) 2009 a roddwyd ar waith ar gyfer dychwelyd dysgwyr ar ddechrau’r tymor hwn er mwyn rhoi hyblygrwydd i ysgolion newid eu hamseroedd sesiynau ysgol dros dro. Bydd y trefniadau hyn, sydd wedi bod yn arbennig o ddefnyddiol i Ysgolion Arbennig, yn cael eu hymestyn tan gwyliau yr hanner tymor, ac wedi hynny bydd gofyn i bob ysgol ddychwelyd i'w hamserlen arferol.
A small proportion of schools have made use of the disapplication of the Changing of School Session Times (Wales) Regulations 2009 put in place for the return of learners at the start of this term providing flexibility for schools to temporarily change their school session times. These arrangements have been particularly useful to Special Schools, so will be extended until the half-term break, after which all schools will be required to revert to their normal timetable.