Now, I will say my husband was on board, but I am nowhere near organized with our girls schooling and they always test at their educational levels.
You probably won't have the same style of homeschooling as your husband's children had. I would just try to talk to your husband to find out why, but if it were me, I'd ask my hubby to be nice when he says things and that you're not looking to find out all the negative things he sees in you. I tend to take things pretty hard when coming from my hubby, even when he means well.
But, like someone else said, if you show him a plan and show him the curriculums you've researched and show him a local support group you've found, maybe that will help.
Also, you could see if he'd be open to letting you "try" it out for a semester to see how it works and then evaluate how YOU like it, how the children like it and how well everyone seems to be doing with it.
I'm SO sorry for the horrible stuff at school. While I always did well in public school, I have horrible memories of constantly being picked on for being short, bullied by boys and HATING the lunches. That and being too scared to go to the bathroom between classes because I knew I'd never make it to class on time.
