[Alex3917]

Actually those claims are basically true. If you look at the graph from my blog post here:

http://alexkrupp.typepad.com/sensemaking/2009/02/the-most-im...

What you see is that the data points from all three ability groups are basically overlapping, meaning that the students get sorted into ability groups based on factors like race rather than on actual ability.

That being said, while you might be able to model the bias of teachers and school systems by using an algorithm, I've never heard of schools actually using an algorithm to explicitly sort students based on race, which he implies that they are doing.

However, assuming he doesn't actually mean this, I think the post is actually legit but just poorly written, perhaps purposely to promote his startup.