Observed Quizlet.com program.  Appears that it can be a very useful instrument for implementing learning.   I was glad to learn about the program.  If I am in a situation where I am assigned to a "Lead Teacher" that uses the program, I will be aware of the program and will be able to follow their directions.  I always welcome to have the opportunity to learn something new, and I can see how the program would be an asset, but it is very unlikely that I would be directly responsible for the implementation of such a program in a classroom.   Bill Webber