In this study, a teacher created online lessons 15.5X faster with AI assistance, resulting in higher learning outcomes compared to non-assisted material. Looking ahead, AI assistants have a chance to augment teachers' capabilities, paving the way for personalized, student-centered classrooms. This integration empowers educators to experiment with innovative methodologies and cater to diverse learning needs. This is especially critical amid teacher shortages and high attrition rates, as AI technology can alleviate burdensome tasks and attract more educators to the profession.