Here are a couple of different refusal letters you can choose from.
Valid and Reliable Refusal This is the letter you want to use. Use their own documents against them.
WI_OPT_OUT_Form (This one would need a little tweaking to make it for Idaho. Easily enough done.)
And what if the school district chooses not to honor our refusal?
Because more than likely you’re going to get a lot of pushback from your school, here is a letter than one set of parents sent back to their school after their refusal was denied. It’s very to the point.