(Sigh...) This is human subjects research...

Evaluation of learning outcomes. Ouch. This is the holy grail of our research effort, and per the latest thinking in educational evaluation we are using a mixed methods approach. This is probably the best we can do, but it's complicated by a number of very important considerations:

• a control group is very difficult to establish
• what are the ethics of denying treatment to the control group?
• confounding variables related to the student body's academic profile
• evaluation may depend on very granular data about individual student usage of the interventions and achievement on exams and quizzes

We have engaged in interviews, focus groups, surveys, usage/download data, etc., so we have a good story to tell. But what might be some other measureables that can give us insight about how important the web 2.0 tools and techniques are to overall student achievement and learning?