mobilise children to harvest potatoes and apples

Just make it a part of school.  Actually learning how to plant, grow, and harvest food is pretty much why we have survived the elements all this time.  So, some basic learning and application wouldn't be horrible.  As long as it's not forced.  Give them some college credits or something. 

I mean, instead of memorizing about all the great dead people and the times that they killed and raped each other's people so they could stand in front of them waving hello while taking their money and saying it's ok for you to live as long as you follow our rules and work for us.  What could be the harm?  Self sustainment?  Education?