Whenever I see one of these articles, I reflect back to this report from 2007:<p><i>How the world’s best-performing schools come out on top<p>To find out why some schools succeed where others do not, McKinsey studied 25 of the world’s school systems, including 10 of the top performers. The experience of these top school systems suggest that three things matter most:<p>- Getting the right people to become teachers;<p>- Developing them into effective instructors; and<p>- Ensuring the system is available to deliver the best possible instruction for every child.</i><p><a href="http:&#x2F;&#x2F;mckinseyonsociety.com&#x2F;how-the-worlds-best-performing-schools-come-out-on-top&#x2F;" rel="nofollow">http:&#x2F;&#x2F;mckinseyonsociety.com&#x2F;how-the-worlds-best-performing-...</a><p>This essasy doesn&#x27;t conflict with the report, but it&#x27;s only a tiny piece of the puzzle.