text: For teachers to have to ablilty to teach a specific class they require a certain degree level in that subject, making that teacher an expert. For example if an earth science teacher were to assign a summer project on the earth's layers that teacher could take a complicated subject, and explain it in a simple way for students to understand. From talking about the earths core elements to how our earth looks the way it does today. These difficult topics for students to understand can be simplified because the teacher is an expert on those lessons. Now summer projects can be better understand when the teacher explains the topic in the correct way.