Pros
You're lucky if you get a teacher with an actual degree in Education. My students for example got the two best teachers, one with a Masters and one with a Bachelors. The curriculum exceeded state requirements and fully prepared students to be at the top of their class when they transitioned to elementary school.
Cons
Unfortunately, the two best teachers with actual degrees were let go, in favor of hiring college kids still doing their teaching hours because they can pay them dirt cheap. Money and politics ruin it all. The wages don't even cover all the time spent outside of work hours doing lesson plans, shopping for materials not provided by the school, creating "teacher-made" activities, compiling student portfolios, completing certifications, etc. I guess it's more important for Management to check Facebook, do online shopping, or BSing with the college kids in the office rather than do actual work like, I don't know, supervising these children with the proper teacher:student ratio.