This cartoon has two frames stacked vertically. The top frame shows a special education pushing two students in wheelchairs simultaneously while leaving a third behind; he says, "Jimmy - I’ll be right back to get you!" In the bottom frame he goes back to get Jimmy, now pushing him while having left the other two students a few feet ahead; he says to them, "OK guys. Once we get up there I can move you 10 more feet toward the cafeteria." The tag line under the cartoon reads, "One of the many practical limitations of homogeneous grouping."