The rapid advancement of Artificial Intelligence (AI) has profoundly transformed educational practices through AI-powered tutoring systems. This review critically examines the evolution of such systems, emphasising the transformative role of OpenAI's ChatGPT. Leveraging large language models, ChatGPT provides adaptive, personalised, and scalable educational support, offering real-time feedback and fostering deeper learner engagement. However, its integration also introduces ethical, pedagogical, and technical challenges, including bias, academic integrity, and privacy concerns. This study synthesises findings from 50 key publications between 2020 and 2025 using a narrative review approach informed by PRISMA guidelines. The paper explores the theoretical foundations of AI in education, assesses student and teacher perceptions, and maps future research trajectories. Findings highlight the need for strategic implementation frameworks prioritising transparency, inclusivity, and responsible innovation to harness AI's full potential in educational contexts.