Iowa Specific:
Note: I am not an attorney, and this should not be considered legal advice. It is the fruit of my experience working with parents and with many school districts.
“Competent Private Instruction” is one of those terms that originated with some poorly-paid lawyer working for the Legislative Service Bureau. It wasn’t meant to frustrate anyone, it’s just the way such functionaries think. Under Iowa law, a child betwen the ages of 6 and 17 falls under one of four categories. And just for the record, the law nowhere describes "competent public instruction." Makes you wonder, doesn't it?
Students attending Christian or private schools which are not accredited are legally considered as under Competent Private Instruction. Only there, the non-accredited school has a special form to fill out, and they fill out the equivalent of a CPI for each student enrolled in their school.
General Considerations
First, let me lay to rest the "precedent" silliness when it comes to the CPI form. The simple fact is, it's almost impossible for you to set a precedent by anything you put on the CPI form. So just lay that to rest. I've devoted some more verbiage to that false fear
Here are several important things to remember about the CPI form.
The local school district "receives" the CPI form.
Where are you going?
They do not:
The only thing they can do is declare that it is
Except in the cases where you left out a required item entirely, the rest is a matter of how much trouble each party is willing to go to.
Once you fill it out, what happens to the CPI report?