Education is widely recognized as a critical driver of national development, particularly in Nigeria, where achieving economic and social prosperity hinges significantly on ensuring quality primary education. Primary education not only lays the foundational groundwork for future learning but also equips students with essential life skills, fostering critical thinking, creativity, and social awareness (Abbas et al., 2024). However, the academic performance of Nigerian primary school pupils remains a persistent concern, reflecting a broader challenge within the nation’s educational system. The state of school facilities is a crucial factor influencing educational outcomes in Nigeria. Adequate infrastructure, including well-maintained classrooms, libraries, laboratories, and access to instructional materials, creates an environment conducive to effective teaching and learning (Adam et al., 2022). In contrast, inadequate facilities can significantly hinder student progress. Despite efforts by the Nigerian government to improve educational infrastructure, substantial disparities persist across the country. According to the Universal Basic Education Commission (UBEC), as of 2023, more than 40% of primary schools lacked basic amenities such as proper furniture, adequate ventilation, and clean water, which are essential for maintaining a healthy and productive learning environment (Adebayo et al., 2023). These shortcomings highlight the ongoing struggles faced by many Nigerian primary schools in providing a conducive learning environment. Overcrowded classrooms exacerbate the challenges associated with inadequate facilities. A 2023 report by the National Bureau of Statistics (NBS) revealed severe shortages of qualified teachers in Nigeria, resulting in pupil-teacher ratios exceeding 40:1 in some regions (Adebisi, 2022). This high pupil-teacher ratio not only strains the capacity of teachers but also diminishes the quality of education that students receive, making it difficult for pupils to engage fully in their learning. Research consistently underscores the significant impact of school facilities on academic performance. Studies from around the world demonstrate a positive correlation between the quality of educational facilities and student achievement. For example, research conducted in Kenya has shown that schools with well-resourced libraries and laboratories tend to have students who achieve higher scores in science and reading assessments (Adebisi, 2022). Similar findings have been observed in Nigeria. Adetayo (2023) found that overcrowded classrooms in Kaduna State had a detrimental effect on student engagement and academic outcomes. Furthermore, Agarry et al. (2022) emphasized the importance of well-equipped laboratories in enhancing practical learning experiences and improving test scores in basic science education. Given these insights, improving the quality of classroom facilities emerges as a key strategy for enhancing the academic performance of Nigerian primary school pupils. By addressing variations in classroom conditions—including space, lighting, ventilation, furniture, and instructional materials—educators and policymakers can create more conducive learning environments that support student achievement. This study seeks to explore the extent to which these variations influence academic performance, considering factors such as the specific types of facilities most associated with higher achievement and how these effects may vary across different socioeconomic backgrounds and between urban and rural settings. By shedding light on these issues, the research aims to provide valuable insights for stakeholders committed to advancing primary education in Nigeria.