Left over points :
The common and research results suggesting that older age students will do better in academic performances because of their developmental advantages.
That’s all for std 1 which comes for formal school. So for KGs it’s better to go for Montessory schools which is having half day working hours and preferring development activities rather than academic curriculum.
If you guide your child properly they will get the milestones early without forcing. If your child is exceptionally well in developments (Not in academic) the age is not an imp criteria.Check for the school cut of age and get admission
Every child is individual and has unique skills. So read your child’s mind and take the right decision.