No one reading this ever sat in a class-room, where his or her equal sat on either side, unless it was his or her twin or triplet! Whether the subject for comparison was academic, in general, physical in general; or confined to a particular discipline, a particular social attribute, etc., etc.; we all differ.
Now that does not mean that a good teacher cannot enhance performance; but that pursuit of enhancement must be directed at the unique personalities with which that teacher has to interact. That interaction, in turn, is an immediate, local interpersonal dynamic. Sweeping pronouncements by agenda seeking egalitarians contribute absolutely nothing worthwhile to a discussion of the process.
William Flax
Accountability up and down the line. Which means the government employees will fight it to the bitter end.