According to Catherine Valentino, flexible grouping is not a new concept in American education. It has its roots in the original one-room rural schoolhouse where students of varying ages, backgrounds, and abilities were grouped and regrouped to meet instructional needs. As towns and cities grew and universal education became a national goal, ways of grouping students changed. The assumption that students of the same age learned at about the same rate caused most schools to group students in classes by their age, a practice that continues today.
"Individual commitment to a group effort: this is what makes a team work, a company work, a society work, and a civilization work." - Vince Lombardi