Have you seen the UNI of Salford course?
http://www.cse.salford.ac.uk/coursev...neering&ref=77
Whislt I accept that PPL ground school doesn't really equate to degree level when you get onto the ATPL ground school then it is/was quite challenging.
I don't know if they still include it but things like the TPhigram and thermodynamics, and working out compressibilty errors ias/cas/ras differences did keep us out of the pub for a few nights.