What would be the benefit of having my children learn the alphabet and numbers and spelling earlier than most, if when they go to school the teachers will be teaching pupils those things and my child will be bored as they are already at this level?
The same applies to swimming. The school gives children weekly lessons from age 6 upwards. If I ensure my child is a competent swimmer by this age anyway, what is the benefit if swimming classes with the school focus on those who cannot swim?