Take two large public elementary schools that are as similar as possible.
In School 1, assign students to classes as is currently done: by age-level.
In School 2, place students into classes without regard to age, but instead by both sex and performance on the state's achievement test.
So, in a school large enough to fill six classes, School 2 would have a class for:
- the highest-achieving girls
- the highest-achieving boys
- average-achieving girls
- average-achieving boys
- the lowest-achieving girls
- the lowest-achieving boys
What do you think of this idea?