piggi:

Some school still having partial single session. P1 and P2 in the afternoon while the rest in the morning.

Knowing that nap time for children of the younger age group is important, and most children nowadays attend childcare centre where nap time became a routine. Having them to suddenly need to sit through the humid afternoon is difficult, and probably end up dozing off during lesson.
Any parent can suggest methods to help child get through the afternoon class. No keen on the 'wake up late' idea.

gov should invest more to make all pri-school single session instead of building wireless network for students