is there evidence of their learning
effectiveness?
A. That's part of what makes the OLI [Open Learning
Initiative, based at Carnegie Mellon University] so unique, is that built into
the environment itself, that accomplishes the teaching, is the mechanism for
assessment. ... They have given a control group and a variable group the same
final, and found that the students using OLI aren't hurt in the slightest by not
having had the same level of in-person instruction—that the system did just as
well, if not better, at teaching them this material. ... Beyond those two
studies, there really hasn't been a systematic appraisal of learning outcomes
based on openly available material writ large. No one disputes that these
open-courseware initiatives have done much good. But it's impossible, with the
currently available data, to determine how much good.