Answer:
My daughters use Florida Virtual School. The pace is can be adjusted, but traditionally it works off regular 18 week semesters. The teachers can be contacted by telephone or email, but the curriculum is mostly laid out online. If the child has a lot of special needs, they will likely need you to help them a good deal. The teachers will be there for you, but it not be something that you can just set them in front of and they will be able to do on their own. The classes are a bit advanced. If you contact the school, they may have special programs. So far, I have had good luck with their telephone customer service.