The Washington Post analyses an interview with Bill Gates, this is the video they comment upon:
The review is very relevant, just one excerpt:
“Hmmm. Teachers around the country are saddled every single year with teacher evaluation systems that his foundation has funded, based on no record of success and highly questionable “research.” And now Gates says he won’t know if the reforms he is funding will work for another decade. But teachers can lose their jobs now because of reforms he is funding.” (read more)
Btw, some of the stuff Bill Gates says has been tested and some of it we know it works, some we know it doesn’t work at all because they are educational zombie ideas (e.g. linking teacher assessments to student standardized test scores).