free apps. But schools may be giving Google more than they are getting. Chicago Public Schools, the third-largest school district in the United States, with about 381,000 students, is at the forefront of a profound shift in American education: the Googlification of the classroom. In the space of just five years, Google has helped upend the sales methods companies use to place their products in classrooms. It has enlisted teachers and administrators to promote Google’s products to other schools. It has directly reached out to educators to test its products — effectively bypassing senior district officials. And it has outmaneuvered Apple and Microsoft with a powerful combination of low-cost laptops, called Chromebooks, and free classroom apps.