Sometimes you have to dig deep. Last week Woman's Hour on radio four reported that, over a working life a female graduate earned £250,000 more than a non graduate. Sounds great? But say your are taxed at 40%, say you borrowed between £20k-£30k to pay your tuition fees, then add the the 3 years of missed out earnings whilst you were studying say another £40k? and you are looking at closer to 50 k over a 40 year working lifetime which divided by years is not so headline grabbing at all.
This analysis is also very black and white comparing working and using school and not working and home educating. From my personal perspective the decision not to return to paid work after maternity leave was completely intrinsically connected to the plan to home educate. I could not have "given-up" my career to do the school run.