It is commonly recognized that, the development of humanity inevitably passes through education which sets the means for any society to ensure its sustainability. But the reality within the Congolese education’ system in general, and that of high schools network in particular, shows that the paramount role of a school is no longer valued. In other terms, the Congolese educational system is plagued by the issue of absenteeism, involving both teachers and learners. Therefore, the goal of this study was to examine the main factors impinging the teaching and learning process. The research intended to go deeply in finding out the causes of this scourge, and showing its consequences, while making concrete recommendations to the attention of policy making people. Through a qualitative approach, using a semi structured interview form Consisting of twelve questions, purposively selected as the data collection tool, to the attention of a study group constituted of sixteen principals and heads of pedagogical bureau across Brazzaville eight high schools, research findings were generated. Certain suggestions were developed in line with the findings obtained as the result of the study.