What years were the Middle Ages?

In this unit, it is mentioned that in order to enter into the field of photography, most jobs require at least a high school degree. since there is a possibility you can attain one of these jobs with just finishing high school, why do some people get an associates or bachelor’s degree?

Based on the sentence, what does a studious effort require

Nprintmaking, what term is used for the object on which the artist creates a design