This study employed the Systematic Review (SR) methodology to examine the content and reasons for resisting the implementation of Continuous Assessment Learning Activities (CALA) in Zimbabwean Secondary schools. The Overcoming Resistance to Change (ORC) model was exploited as the analytical lenses. The study found that factors such as education, training, communication, participation, cost, motivation and resources determined the acceptance or rejection of the implementation of CALA. The shortage or absence of these elements has resulted in intensified resistance to the implementation of CALA. This study therefore recommends sustained effort in raising the level of education, communication, training, participation and motivation teachers, parents, and learners. In addition, the government of Zimbabwe should increase its support through cost bearing and resources supply as required to meet the demands of CALA.