Curiosity...

So last January I jumped the gun and enrolled in an Education and Public Policy program online through Ashford University in Clinton.  I absolutely love the program.  However, my current class, Leadership and Social Justice, is proving to challenge my brain cells.  Its very common for a class to start with 15-20 people and one of the requirements is to respond to at least two of your classmates posts for each discussion.  Simple enough right?  Well today I posted my one page paper on achievement gaps and out of curiosity checked to see how many people were left in this class.  After one week, we are down to 4 people in the class.  So this peaked my curiosity...what happens if the class gets down to only 2 people?  How are you supposed to respond to two other posts besides your own?  Food for thought!