Or is the practice old fashioned?
The Government figures reveal youngsters born in the summer are less likely to have a “good level of development” in core areas.
Some parents aren't impressed by the move.
Zoe Petre has been sharing her colourful, neatly-written revision notes on Instagram since 2016.
The move has encouraged debate amongst parents and pupils.
The state is set to become the first in the US to enforce later start times for schools.