Independent Education Evaluations: The true purpose behind IEEs and the tricks used to deny them

The Question Asked:
"What happens when a district denies part of an IEE and approves others? Do they take me to due process for the parts they denied or do I have to take them to due process for the parts denied?

They denied these particular parts based on the fact that they didn’t do these evaluations (even though I requested them) which I know is not appropriate.
I know that IDEA affords a parent the right to an IEE at public expense and does not condition that right on a public agency’s ability to cure the defects of the evaluation it conducted prior to granting the parent’s request for an IEE. Therefore, it would be inconsistent with the provisions of 34 CFR §300.502 to allow the public agency to conduct an assessment in an area that was not part of the initial evaluation or reevaluation before either granting the parents’ request for an IEE at public expense or filing a due process complaint to show that its evaluation was appropriate. Under 34 CFR §300.502(b)(5), a parent is entitled to only one IEE at public expense each time the public agency conducts an evaluation with which the parent disagrees.

But I don’t know what my recourse is at this point? How do I proceed to get these IEE’s?