-- How do you measured?
-- Why you worry about?
Will the repeating grade be benefit for his future success?
-- Definitely NO.
What will be advantages and disadvantages?
-- No any advantage.
-- "道法自然" means take it easy.
-- Don't push the kids too hard.
-- Let them play more in the little age, don't give them unnecessary pressure.
-- Kids are smart, they will grow up.
-- Pay more attention to their healthy.
Thanks!