The purpose of this study was to validate whether remaining out-of-School Children enrolled in Learning Centers under the Third Primary Education Development Program(PEDP4). In addition, the study verified to what extent the innovative approaches ensured a positive learning environment, teaching-learning process, timely provision of inputs as well as effective management of the implementation process leading to the expected learning outcomes. A mixed-method was employed in the study. Both qualitative and quantitative tools and techniques were developed and administered. For the quantitative aspect of the verification of the actual participation of children in the Non-Formal Primary Education (NFPE) program, the study selected 96 learning centres (LCs) from a total of 3332 learning centres (LCs). 672 students from the original list of Bureau of Non-Formal Education (BNFE) were surveyed to verify the original list of Bureau of Non-Formal Education (BNFE) and 2883 students were surveyed to get a sense of the status of the project. The qualitative aspect of the study covered both institutional and pedagogical aspects of the implementation process. 118 KII, 14 FGD, 14 case studies and 96 observations from 96 learning centres were conducted to triangulate the findings for validation. All the relevant stakeholders who had a role in the implementation of the various innovative models of Non-Formal Primary Education (NFPE) right from the BNFE central to teachers, as well as parents and communities, were inquired by using the stated methods. The study reviewed and verified the issues such as unclear