T.S.
I believe home schooling three kids would pretty much be a full time job. If you are currently looking for work outside the home and contemplating a separation (as you have stated in other posts) it seems like you've already got a lot on your plate!
Is it because the school your 11 and 6 year old attends is not good?
I am not against home schooling, I just know it's a huge commitment and I think for your kids' sake it would be something to look into after you get your marriage and employment issues settled. Good luck :)