Google, Apple, Microsoft, Khan Academy, and others sign pledge to protect K-12 student privacy Hayley Tsukayama / Washington Post : Washington Post 2015-01-21 Hayley Tsukayama Apple, Google, Khan Academy, Microsoft, Hayley Tsukayama, K-12 Related Coverage View article Wall Street Journal View article Future of Privacy View article 9to5Google View article SiliconANGLE View article AppleInsider View article SlashGear View article Digital Education