A minimum of 30 mins recess for every 2 hours school. Free play mixed grades etc plus teachers to organise open to all informal soccer etc - they don't have to play the whole time themselves just get the game going and encourage.

Optional only homework except little things like spelling words, timetables at 5 to 10 minutes andreading.

Ability grouped classes for maths, reading and writing. Try and be within a few years though as it is not going to help a nine year old to be put with five year olds. In the other direction go as far as the gifted kid is comfortable at least initially.

Gotta go.