There isn't much doubt that the bonus scheme for teachers will not work. Like the mystique of "time and motion" where the claim is made that human productivity is linear and is an increasing curve, it's a pipe dream! Machinery can only be speeded up so much before parts start flying off in all directions and everything shuts down for maintenance. Furthermore, when task are done too quickly a lot of "non-size" rubbish is produced. While output in some industry can be improved, for paper carriers such as teachers this is virtually impossible. Some teachers are better than others and for the main part this is innate: it is not learned and never can be. The only measurement is the quality of students that are lucky enough to be taught by them. Even then, tying down the factors that do improve matters is not easy to identify. Usually. students have an affinity with a teacher; thus they are prepared to work harder. It is not the teacher who is putting in m