Original sentence: Community college professors are solely dedicated to teaching, and classes are generally small.In comparison, a four-year college course may be taught to 300 students by a teaching assistant, while the professor is concentrating on research
Edited sentence: Community college professors are solely dedicated to teaching, and classes are generally small, about the size of a standard high school class.In comparison, a four-year college course may be taught to 300+ students by a teaching assistant, while the professor is concentrating on research