The integration of artificial intelligence (AI) in education holds transformative potential, particularly in language learning. This study explores the integration of ChatGPT into secondary school language education in the Philippines, addressing key challenges such as lack of personalized feedback, low engagement, and limited resources. Employing a mixed-methods approach, data were collected through surveys from 150 teachers and 500 students and focus group discussions. Findings reveal that ChatGPT effectively supports vocabulary development, grammar exercises, and conversational practice, significantly enhancing student engagement and tailoring instruction to diverse learner needs. Teachers highlighted the need for training workshops and technical support to ensure effective implementation. The study culminates in the development of a practical handbook, providing educators and learners with actionable strategies for leveraging ChatGPT in language learning. These strategies include customizable prompts, interactive simulations, and techniques to address challenges in traditional language instruction. This research underscores the potential of AI to create inclusive, adaptive, and engaging educational environments, paving the way for scalable improvements in language education.