While I agree with the thrust of his argument, his suggestion that one way of doing this through "augmenting technology" is bogus. No study has shown that technology improves teacher effectiveness or raises student achievement.
Instead, teachers themselves say that the best way to improve their effectiveness by far is to reduce class size. See the recent national survey of first year teachers from Public Agenda, called "Lessons Learned" .
76% of teachers overall said that reducing class size would be "a very effective" way of improving teacher quality, and 78% of teachers who work in high needs schools. 21% of teachers said reducing class size would be "effective", for a total of 97% -- far outstripping every other strategy mentioned, including :
Increasing teacher salaries (57%), increasing professional development opportunities (54%), making it easier to terminate unmotivated or incompetent teachers (41%), requiring new teachers to spend time under the supervision of experienced teachers (35%) requiring graduate degrees in education (21%), requiring teachers to pass tough tests of their knowledge ot their subject (21%), tying salaries to principal or colleagues assessment (15%) tying rewards and sanctions to student performance (13%), eliminating tenure (12%), reducing regulations for teacher certification (8%), and relying more on alternative certificaiton (6%)..
(In each of the categories I have put in parentheses the percent who said this would be a "very effective" way to to improve teacher quality.)
By the way, these views about the effectiveness of reducing class size to improve teacher effectiveness are shared by more experienced teachers and most principals as well.
See this 2006 public agenda survey of teachers and school administrators, "Is Support for Standards and Testing Fading."
"If the public schools finally got more money and smaller classes, they could do a better job." 88% of teachers agreed with this statement, and 85% of superintendents and principals, far outstripping any response.
Compare how many teachers, superintendents and principals agreed with this statement: "More testing and higher standards will ensure kids will master the skills they need": 1% (teachers), 7% (supers); 10% (principals).
If we really respected the opinions and views of the professionals who work in our schools, we would do everything in our power to reduce class size.