Must teachers be good students?

Must good teachers have been good students? Can a teacher who was always an A student understand a student who has never gotten better than a C?

Studies have shown that there is little relationship between course grades and teaching performance.

Not every good student goes on to become a good teacher because as a teacher, knowledge alone is not enough. While being knowledgeable allows one to achieve good grades in school, teaching requires a further aspect of actually imparting that knowledge.

Two different teachers may be able to solve the same maths problem. But the difference is not whether which teacher can solve the question faster, but which teacher can deliver the solution with clarity, while ensuring that his/her students understand the relevant content.

However, achieving a certain level of knowledge proficiency is still without a doubt, an essential pre-requisite for all teachers.

But being sufficiently articulate, and able to communicate effectively are more important tools for effective teaching.