Hi Erin
It’s interesting that you mentioned “price”. Currently, schools subscribe to GAFE for free; the profit for Google is due to the fact that using their services may lead to purchases of school sets of Chromebooks, or students deciding to buy Google Play/Google Music products or smartphones running Google technology. Surely, data collection is valuable, although according to the terms and conditions student information is private. (“Google does not share or reveal private user content such as email or personal information with third parties except as required by law, on request by a user or system administrator, or to protect our systems.” from https://sites.google.com/a/d155.org/googleapps/faq)