Column sort for classes

When I look at the list of classes for one of my teachers (on the summary page of an individual teacher), I can't reorder them.

It would be helpful to be able to click the column headings (Class/Days/Duration/Students) and have the classes reorder themselves.
If that is unachievable, then having the order of classes show in chronological order seems the most logical choice.

I hope this makes sense - happy to answer questions if not!