Great Group Identification

I'd like to know this as well. While doing the practice quiz on SoilWeb200 there were questions about identifying the great group, however this wasn't covered too much in lecture. Are we expected to know and identify the great groups in addition to the soil orders?

For the final exam you need to be able to identify soil orders and diagnostic horizons for each soil order. You should have a general idea of how the Canadian classification system works, but you will not be asked to differentiate great groups.