Write a news report on the innovative partnership between Puget Sound Energy (PSE) and the Snoqualmie Valley School District, focusing on how electric school buses will not only serve as transportation for students but also as crucial mobile power sources for the grid. Consider including the benefits this initiative has for the environment, local communities, and students, while highlighting the significance of funding from the Washington Department of Commerce. Your report should capture the excitement surrounding this pioneering approach to sustainable energy solutions in education.