There is a growing trend towards starting kindergarten later, sometimes at the age of 6 or later. Most parents who hold their children back at home, do so because they think their child is not ready for kindergarten. In their opinion, their child will be stronger (socially and emotionally) and smarter if they wait longer.
A recent study examined the academic results of students who started kindergarten later. Of course older children were performing better than younger students at first, but eventually they had similar academic test scores throughout elementary and middle school. So their ‘advantage’ over younger children had worn out by the time they were in grade 8.
As a result, by the time these late kindergarten students have finished their academic paths, they start working a year later. Also, parents have an extra year of childcare costs if they delay entry into kindergarten.
In my opinion, children should attend kindergarten as early as possible. The possitive effect that older classmates give them (setting higher standards, getting help from older students) is too valuable.
I wonder what your opinions are about starting kindergarten early or late!