@BobKamman 

can education be claimed as an expense on Schedule E? 

This is the class. I'm certain it is legitimate and ordinary.  https://www.openspaceswomen.com/

She was a consultant in a different industry prior to this real estate pursuit.

Nexus is relevant and is key, isn't it?  There probably will be a direct connection between her learning and her (future) income.  (Unless she decides not to pursue it.  She is a full-time stay at home mom, and I would not be surprised if that consumes all her time.)