This paper examined the role of Artificial Intelligence (AI) in redefining the academic achievements of primary school pupils in Nigeria, addressing the problem of limited integration of AI tools in foundational education where traditional examination-based learning often dominates. The objective was to explore how AI-powered technologies can personalise instruction, provide timely feedback, and support effective teaching and learning with the role of teachers as facilitators in selecting age-appropriate, curriculum-aligned resources clearly stated. Through a review of existing literature as secondary source of data, the paper analysed AI tools such as Night Zookeepers, Kahoot!, Quizizz, and Story Bird, which promote personalised instruction, active engagement, and self-paced learning. Findings revealed that these tools enhance pupils’ cognitive, affective, and social development, making learning more interactive, engaging and enjoyable, as well as significantly improving academic achievement beyond conventional methods. The study concluded that effective integration of AI in primary school education can transform learning into a more engaging and learner-centered process. The paper recommended continuous professional training and development programs for teachers to equip them with the necessary skills and ethical competencies required for the effective use of AI in primary school teaching and learning in Nigeria.