Adult Education - S1E20

To help her get a promotion at the museum, Blanche is trying to get her degree, and she's struggling in her psychology course.  Her slimy professor offers her an A for the semester if she'll sleep with him.  Well, Blanche just can't stand for this and tries to get the dean on her side before she realizes she's just going to have to tackle the situation herself and earn that A by studying.   Meanwhile, the other ladies are obsessed with seeing Frank Sinatra in concert, but acquiring (and then selling) tickets is a little tougher than they expected.