A degree is a term for measuring achievement. A two year degree is a degree. How many degrees would you give such a degree- not 360 degrees that's for sure?

As for teaching with such a small degree degree. If you need to discuss pepys with your students and impress upon them the main problem that linguistic scholars like yourself have with dating ceetain events in his diary, you will need a teacher with a bachelors degree at least
But for ordinary language learning anybody nearly will do,who speaks clearly.