`I'd wager an online-only service can be locked down in ways that the TIs couldn't be, and with considerably less manual effort.` But they have to either provi

`I'd wager an online-only service can be locked down in ways that the TIs couldn't be, and with considerably less manual effort.` But they have to either provide fully-locked-down computers or somehow lock student computers down otherwise. That sounds hard or expensive, too. If schools adopt chromebooks like mad, could work?