Students have had more tests than the Shroud of Turin and the results are encouraging - in fact, both times we saw record gains in critical thinking. In fact, in the most recent test, student gains in critical thinking over 11 weeks were greater than would normally be found across an entire undergraduate education.
Social science is hard.
You could question our results a dozen ways - so more studies are in the works. By some time in about 2004 we should have some pretty solid evidence. They'll need the software and supporting materials such as guidelines, lesson plans and exercises. Our strategy is to team up with teachers and schools in development partnerships. The software and materials get field-tested, then packaged and distributed to other schools.