Sleeping with a reasonable duration is important, but the quality of sleeping is ever more critical.
I do not quite agree the theory of AM and PM, its just kind of a selfish thinking of most parents only.
And there is no prove that children are better for attending AM than PM
In fact, most children sleep deeply between 6 - 9 am, and that makes the difference.
Actually, I personally prefer early childhood should go for PM class until K2 or even K3
Thank you for sharing. Indeed, it hurts our hearts when we hear our child cry.
Anyhow, my child sleeps in a bed. May be ..... I could lock her in the room ......and let her cry