Why wait?
I have heard the same question from people wanting to live on a boat and cruise the world. Those who did go cruising found the experience broadened the horizon of their kids who gained from visiting other places plus the home schooling put them ahead of the age group when they returned to “civilization” several years later.
My wife grew up off grid. She never even saw an electric light bulb in a house until she was 14 years old. The standing joke in her family when I talk about ‘off-grid’ is to ask “what is off grid? You mean living like we did normally?
Seriously its more important to do what you feel is correct than toeing the line as per society’s norms. There are any number of home schooling programs available. Calverts School was a traditional system where school work could be mailed in but I know two families in BC where the schooling is done via internet. One by wireless and one by dial up phone. These kids have to sit the same exam as their contemporaires and thus are on par with attending school houses. In some ways they are doing better.
Visit http://www.genverters.com website owners Jackie and Marshall has been living off-grid for the past 10 yearws while raising a couple of kids who are now teen agers. Judging by the kids bloggs they benefitted from the experience.
This website had a video clip from a Brigham Young University outreach group. The engineerring group devised a merry go round that drove a generator to power a charging station so the kids could take home LEDlights for doing homework at night in their off grid homes that lacked any sort of modern conveneience. The generator also powered lights in the class room in a school hundred of miles from any sort of grid.
Go for it while you are young and can do it.