Educational institutions worldwide are rapidly adopting generative artificial intelligence (GenAI) tools, such as ChatGPT, Gemini, Claude, and others, with the vast majority of students now using these technologies regularly for academic purposes. Surveys indicate that up to 86% of students globally, and 79% at EPFL, utilize GenAI for tasks like information retrieval and writing assistance. Miami-Dade County Public Schools, the third-largest school district in the United States, has implemented the largest known U.S. rollout of AI in education, training over 1,000 educators and introducing Google's Gemini chatbot to more than 105,000 high school students. The district selected Gemini for its privacy guardrails and content controls. This move follows a reversal of previous bans on AI chatbots, with an emphasis on responsible and critical use of AI tools in classrooms. Teachers in Miami are using AI chatbots to create interactive lessons and provide instant feedback, while also training students to critically assess AI-generated content. The district has established guardrails for privacy and content, and offers extensive training for educators through the AI Institute. Over 400 principals received live demonstrations of the technology before the rollout, and students now have access to courses such as AI Fundamentals, developed by the University of Florida. Studies show that while AI tools can enhance student engagement and improve the quality of assignments, there are concerns about students offloading critical thinking and learning tasks to AI, potentially leading to reduced motivation and skill development. A recent RAND report found that the likelihood of generative AI tools leading to measurable improvements in teaching and learning is low. Researchers and educators advocate for assignments that require active learning and for integrating AI as a supplement rather than a replacement for traditional educational methods. In New York City, teachers are leveraging AI to deepen STEM education, foster creativity, and address ethical considerations in technology use. Programs like the Scientist-in-Residence initiative and dedicated AI workshops are helping educators incorporate AI into hands-on projects and data analysis, with a focus on enhancing conceptual understanding rather than efficiency. Experts highlight the need for ongoing teacher training, ethical guidelines, and human oversight to ensure that AI serves as an educational tool that supports, rather than undermines, student learning and critical thinking.