Education may be described as a process of teaching or instruction received; a process of training and improving one’s test and life standard. Education is equally the bedrock of every society and a tool for nation building. In recent times, quality education was brought to focus owing to the neglect and mass production of educated people without regards to set standard, procedure and process in education. Quality education is said to be the right of every citizen, not a privilege that may be granted or withheld by who ever is in-charge to provide it. Therefore, for quality education to be achieved, it is important to know that the principal factors must be in place, these include: the teacher’s, learning environment, and the students. The importance of quality assurance in the educational sector as initiated by Common Wealth of Learning (COL) is not without many daunting challenges. This paper assesses, and reviews some factors and subsequently classifies teachers in Kwara State into four classes based on quality indicator. The classes are: Teachers per excellence, the charlatan in teaching profession, the mediocrity teachers, and the quack teachers. The challenges of training and maintaining quality and qualified teachers by any country in Africa should be anchored on the existence of the above class. The suggested classification was occasioned by unemployment situation in Nigeria which renders teaching profession the last resort for all job seekers. The writers also review other areas of challenges militating against quality assurance in teacher education in Kwara State. Recommendations are made and conclusions drawn.