NWEA Assessments - NWEA Assessments creates a personalized assessment experience by adapting to each student's learning level.
WT:Social - A news focused social network from the founder of Wikipedia
ALEKS - ALEKS is a web-based artificially intelligent assessment and learning system that uses adaptive questioning to accurately determine exactly student knows.
Facebook Design - Resources for Designers from the Facebook Design team
ExamView Assessment Suite - ExamView lets you can create assignments, launch classroom assessment questions and collect real-time responses to evaluate student performance.
Build It With Me - Connecting you with like-minded designers & developers