An anecdote: I was fortunate to attend a primary school in Australia where the headmaster was very keen on helping both the low end and the high end students.

An anecdote: I was fortunate to attend a primary school in Australia where the headmaster was very keen on helping both the low end and the high end students. The main work for the gifted students had almost zero budgetry requirements; it was a weekly class with assorted thought provoking questions and projects led by one of the existing staff members. Obviously there was a time cost involved in having someone do that instead of other duties, but that would not have shown up as extra budget.