Yes this is the difficulty as there is no set standard. We went with the basic 3 digit system as most people in the US are familiar with it. Most will understan

Yes this is the difficulty as there is no set standard. We went with the basic 3 digit system as most people in the US are familiar with it. Most will understand (some subject) 101 is an entry level course. There are those in other countries who don't get it as we have found out. We are working on a new design that will be clearer in explaining this.