Hi H.,
I will be home-schooling my son next year too. (4th grade)
Home schooling is FREE! Your children remain students of your district, ie San Diego City School District, La Mesa/Spring Valley School District... depends on where you live. Also, you could use an independent Charter/Home School within your district. Our district (LMSVSD), has a "Home School Department" located at one of the local school sites, they evaluate your kids, set up curriculum, give all materials, monitor progress, have 1 weekly 1/2 school day for socialization/computer/ etc, field trips.... I have found them extremely helpful AND supportive! Call your kids school, ask about the districts "home school dept", get in touch and get them enrolled for next year before this year is over. If you opt for a Charter, you may also be eligible for a stipend for each child (~$1000/each year) for extras say music, art, language, or science classes.
Check out your district or school web sites for extra info. Good luck to you!!