For those who wonder, "how do I start hsing", here's my 2 cents.
1) You MUST know the hsing laws of YOUR state. They vary and can vary WIDELY!!!! Home school legal defense fund is a good place to start (as other posters have mentioned). There are also other websites that hsers have put together for each state. Try doing searches for "your state homeschoolers". However, remember, it is YOUR responsibility to know and comply with the law!!!
2) Some times the law will dictate some of the subject you must teach. Aside from that, your local school can tell you what THEY teach in what grade. You do NOT have to follow that, but it may be helpful when you're just starting out. Also, if you see what curriculum is available for each grade, that will help you know what you COULD teach.
3) You WILL be overwhelmed with curriculum choices. If you are even a smig short of being overwhelmed, be happy, VERY happy. Rainbow Resources has a HUGE catalog for home schoolers. I highly recommend it.
4) If you can attend a curriculum fair, do so. It's nice to be able to look through so much curriculum at one time. But, remember, you will get overwhelmed.
5) Create a list of subjects you're considering. You can add and subtract, but at least this will give you an idea of what to look for. Between home schooling catalogs and curriculum fairs, start LISTING what you think you might like to try. Just keep narrowing down the list. Sometimes it's helpful to look for reviews on-line or ask questions on boards like this.
6) Try to find homeschoolers in your area. If you find a homeschooling website for your state, there are sometimes hsing groups that are listed. Even if you don't join a group, many times the families are willing to help get you started and share their experiences with you.
7) I HIGHLY suggest you WRITE DOWN the reasons WHY you are homeschooling and WHAT you want to "get out of it". On your bad days (and you'll have them), you don't think straight and it is so helpful to be able to go back and remind yourself of your priorities. Every family I know that has done this highly recommends this to all homeschooling families.
I guess I should have put this as number one, but I recommend the book by Lisa Whelch, "So You're Thinking About Homeschooling". It details how 15 families homeschool. I like it because most new hsers don't realize the wide variety of homeschooling styles and this gives real life examples of each. It's a good place to start to see if you're more of an unschooler or cyberschooler or somewhere in between.
Sorry this post got a bit long, but maybe it will help someone.
