Staff collegiality is a desirable value and culture in which the behaviour of the staffs is directed towards the commonly valued ends. The systems of HEIs in general and teaching and learning in it in particular require a spirit of collegiality that both reflects and fosters mutual respect among all groups within the system. Such a spirit is the basis for collaborative work environment which in turn enhances smooth relationship, informal learning, and performance of the academics. The environment of a university in general and the teaching and learning in it in particular demands establishing interpersonal relations, and a spirit of collegial value and beliefs that both reflect and foster mutual respect among all the staffs within the university. This serves two purposes: i) it enhances informal learning, and ii) it empowers the staff members to be committed for the betterment of its practices in line with their personal and shared values. When these are absent or not to the required level, staffs feel indifferent to enhance shared values and beliefs. Virtually, the learning institution is 'characterized by staff that continually learn from each other and from experience and, by so doing, solve problems and improve on a continuous basis' and is known for their collegial and open for evaluation culture. A culture of collegiality enhances shared responsibility of staff for institutional outcomes, shared goals, information exchange and collaboration. If collaboration and sharing information is not the norm of the institution, however, teachers hesitate to consult colleagues because that may be considered a sign of incompetence and/or inefficiency (Nias, 1198). Overall, collegiality enhances shared learning and common successes in the university mission. In this paper, the collegial practices and implications on teaching and learning have been explored. The paper has four parts: introduction, literature review, analyses, summary, conclusions and implications. 1.1. The Problem The environment at higher education institutions demands collegiality with a culture of transparency and willing assent of each staff to be committed for the success of institutional missions under whatever conditions. Staffs at universities should be able to teach, do research, and give professional services in a collegial environment: the social, structural, economic, cultural, political, and administrative environment.