I don't think teaching will help with the subject - for universal takeup, encryption needs to be baked into all the software we use; either transparently or with very, very easy use. Otherwise people simply won't bother. Getting people to use vaguely secure passwords is difficult enough. And that's with a new large corporation in the news everyday for being pwned.
The software has to handle it for the UK in particular; otherwise police can simply trump up some charge or other and demand your keys...thus rendering the whole effort pointless.
The landscape is changing, slowly, with everybody changing to things like SFTP and TLS and similar as the defaults; but all comms software needs to come with baked-in point-to-point encryption (and local storage) as well. The problem there is it's extra expense for the software company for little visible result and -even if executed perfectly- they will be met with cries of "Oh great, another bloody password"
Biting the hand that feeds IT
