Education is a key instrument of rehabilitation, human capital development, social reintegration, and crime reduction. In correctional settings, access to quality education can help inmates develop literacy, numeracy, vocational, entrepreneurial, and other competencies necessary for productive participation in society after release. In Nigeria, the transformation from a prison-oriented system to the Nigerian Correctional Service (NCOs) has strengthened the emphasis on reformation, rehabilitation, and reintegration. Nevertheless, educational opportunities available to inmates remain constrained by overcrowding, inadequate learning facilities, a shortage of qualified instructors, limited educational materials, insufficient funding, technological constraints, insecurity, stigma, and weak coordination between correctional institutions and educational agencies. This paper examines educational opportunities and human capital development among inmates in Nigerian correctional centres, focusing on the nature of educational programmes, their contributions to rehabilitation and reintegration, major challenges and prospects for improvement. The study adopts a qualitative research design based primarily on documentary analysis of relevant legislation, policy documents, scholarly literature, institutional reports and publications of national and international organisations. Human Capital Theory provides the theoretical foundation for the study, while the rehabilitative perspective provides an additional conceptual basis for understanding education as an intervention for behavioural transformation. The paper argues that education should not be treated as a peripheral welfare service within correctional institutions but as a strategic component of correctional administration and national human capital development. It recommends increased funding, expansion of literacy and formal education, vocational and digital skills programmes, partnerships with universities and other educational institutions, improved learning infrastructure, teacher development, recognition of inmates' qualifications, post-release educational support and stronger monitoring and evaluation mechanisms. The study concludes that a properly designed and adequately funded correctional education system can contribute substantially to reducing recidivism, improving employability, strengthening social integration and promoting safer Nigerian communities.

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Below is a comprehensive research-paper draft structured for academic use, with emphasis on the Nigerian Correctional Service, inmate education, rehabilitation, human capital development, and reintegration?