Google Hangouts.

Teachers are going to be reading this and groaning. but kids are very social, and create friends through school. these friendships can help in a number of ways, such as depression, clubs, and making recess more fun, as well as numerous things later in life. so what if they are chatting with existing friends? well, kids are very social, as i mentioned above, and of course they are going to be talking with friends! even in the classroom, a kid might be paired up with a friend, for say a math problem, and they will solve the math problem, and then just start chatting, and laughing, and mutually having a good time! so, these kids on hangouts wont be solving math problems together, right? but it will be very similar. kids will help each other out, and chat casually. so they wont be solving their math problems, right? wrong! kids will have a incentive to solve, and will instinctively solve it correctly, so that they get 2 bonuses- good grades and good fun! hangouts is central for this all. take hangouts away, now everybody is going to be using gmail. inboxes will get clogged, kids will be miserable, teachers will start to notice worse grades, and nobody will really be accomplishing anything.

so if you read my entire rant, good job, you made it. the entirety of all the problems adds up to one thing, where nobody has to do anything- KEEP GOOGLE HANGOUTS!