I work at a college, and we have recently picked up ipads for many of the faculty. We are collecting information about student attendance and other demographic information in the Numbers program. What we would like to do is have all the dozens of ipads automatically send the Numbers spreadsheets to a central computer every night, so the faculty doesn't have to remember to manually send an email every day. Does anyone know how to do this? Thanks.

To the best of my knowledge, you can't.

There is no built in automator, and sandboxing makes it impossible (or close enough to) for a third party app to add this kind of ability.