I am homeschooling my kids as well. You can get a copy of the Student edition for homeschoolers, in fact NI encourages this. I teach a class to several homeschool kids. I talked to NI and with the help of my local rep, I was able to get some free copies of LVSE. granted they were LV8.2 but they were free.
Here is a picture of my son with James Kring (He thinks James is a LV god) He wrote his first program when he was only 10 and his project for the class was to make a radar gun for hot wheels cars. We took a Hot wheels car ramp and some photo diodes (I think, its been a while) the kids had to write a program that read the start and the stop with a NI 6008 and calculate the time and how fast the car was going. Very neat project, they loved it.
http://lavag.org/ind...ewimage&img=181
Hope this helps,