For Teachers

CAUSE (Consortium for the Advancement of Undergraduate Statistics Education)
This is an excellent source of resources, professional development, and research in support of teaching statistics. Also see CAUSE Resources
Merlot (Multimedia Educational Resource for Learning and Online Teaching)
A collection of peer reviewed online learning resources, with over 1000 statistics resources.
Statistics Instructors Lost in Cyberspace
Support for instructors of on-line statistics courses.
ARTIST (Assessment Resource Tool for Improving Statistical Thinking)
Provides assessment resources for teaching introductory statistics courses. Includes an assessment builder that generates test items drawn from a database. Be sure to consider the CAOS test.
Statistics Online Computational Resource (SOCR) at UCLA
Online aids for statistics education, technology based instruction and statistical computing. Resources include applets, computational and graphing tools, and instructional materials.
Free subscription given to monitor and participate in ongoing discussions, and to access archived discussion regarding teaching and learning statistics. 
Journal of Statistics Education Information Service
The homepage for the Journal of Statistics Education Information Service from which users can access The Journal of Statistics Education, Software Resources, Searchable Archives of Discussion Groups, and Statistical Education Resources Statistics Information Sources (links to other Statistics servers).
Teaching Statistics and Research Methods: Tips from ToP
This is an organized collection of over 100 articles on statistics and research methods from the journal Teaching of Psychology, from the years 1999 through June 2012.
The American Statistical Association
A professional home for statisticians. ASA offers many resources in support of statistics teachers and students.
Statistics Resources for Business and Educators
Links to teaching resources for basic concepts: overviews, online books, tutorials, and quizzes.
AP Teacher Community (Advance Placement for High School Students)
A free website for AP teachers to collaborate, share resources, and discuss all things AP.