For the past 35 years of school reform, business practices and, yes, even metaphors–“the bottom line,” “return on investment,” and titles such as “CEO” and “Director” have been present in classrooms, schools, and districts. This month, I feature cartoons on two basic concepts prevalent in corporate America: efficiency and productivity. Often confused with one another, they are separate concepts. Separate or not, cartoonists have had fun poking at both. Enjoy!