Facebook Watches Teens Online As They Prep for College – The Markup

"After signing into their ACT account, if a student accepted cookies on the following page, Facebook received details on almost everything they clicked on—including scrambled but identifiable data like their first and last name, and whether they’re registering for the ACT. The site even registered clicks about a student’s ethnicity and gender, and whether they planned to request college financial aid or needed accommodations for a disability"