Mae'r Mesur yn ei gwneud yn ofynnol i awdurdodau lleol a chyrff llywodraethu hyrwyddo bwyta ac yfed yn iach gan ddisgyblion ysgolion a gynhelir, annog mwy i gymryd prydau ysgol a gwarchod hunaniaeth disgyblion sy'n derbyn prydau ysgol neu laeth ysgol am ddim. Mae'r Mesur hefyd yn gosod dyletswydd ar gyrff llywodraethu ysgolion a gynhelir i gynnwys yn eu hadroddiad blynyddol wybodaeth am y camau a gymerir i hyrwyddo bwyta'n iach gan ddisgyblion yr ysgol, a dyletswydd ar y Prif Arolygydd Addysg a Hyfforddiant yng Nghymru i hysbysu Gweinidogion Cymru am y camau a gymerir gan ysgolion o'r fath. Rhaid i awdurdodau lleol hefyd sicrhau bod cyflenwad o ddŵr yfed ar gael yn ddi-dâl ar safle'r ysgol.
The Measure requires local authorities and governing bodies to promote healthy eating and drinking by pupils in maintained schools, encourage the take-up of school meals and protect the identity of pupils receiving free school lunches or milk. The Measure also places a duty on governing bodies of maintained schools to include in their annual report information about the action taken to promote healthy eating by pupils at the school, and a duty on the Chief Inspector of Education and Training in Wales to keep Welsh Ministers informed about the actions taken by such schools. Local authorities must also ensure that a supply of drinking water is available free of charge on school premises.