Excellent question, posed by Larry Cuban, on the case history of the once-widely-celebtrated Gary Plan for education.About 100 years ago, its blend of manual and mental training, along with night schools for recent immigrants, was seen as a marvel and widely copied. Now nobody remembers it even existed, partly because of how they defined ‘success’, according to Cuban. Here’s the link.
I’ve certainly noticed that if you ask people about any sort of reform, you NOT necessarily find agreement. I have spoken to Turks who vehemently deny that there was any sort of systematic genocide of Armenians roughly a century ago, and Chinese who deny that anything bad is happenig in Tibet. There are even people who defend the memory of Genghis Khan, Franco, Hitler, Mao, Stalin, and the KKK!