Comment by wisty

You're too optimistic on the skills of teachers and school admin.

Let's ignore good teachers and principals, they aren't an issue.

Bad teachers and admin will do what bad students do when facing a high stakes test - forget that learning is important and just do a crap job gaming the test, and often do worse than if they would focus on just doing the content properly.

A bunch of people here probably don't see the issue - they think that they would do a good job learning or teaching a student when focusing on a specific test. But it's not the good teachers and good students who are the issue. A bad teacher might give students the same past paper every week for a year, and their bad students just memorise the right answers for the multiple choice. This is just an example, there are lots of bad strategies and the bad teachers will find them all (while the good teachers ignore all the noise).

It's the bad teachers and students that the system needs to fix, and too heavy an exam focus will screw it up (as will zero exam focus).

"Well just fire the bad teachers lol" um ... ok ... that's a bold strategy, but you can't axe that many and not massively increase their salaries to find replacements. You want super star individual performers, you gotta pay to attract them. You want a cheap consistent workforce where the bad eggs do less damage, focus on a good process that the weaker ones can follow, not rewards for individual success.