As a parent, if you think your child will need an IndividualizedEducation Plan (IEP) then you can request your local public school to do testing to see if your child qualifies. The IEP became law when the Individuals with Disabilities Act was enacted. Because of that, there are precise timelines your school must follow once you have initiated the process. After you ask for testing in writing, the school has15 days to consider the request. If they decide to do an assessment, they have another 15 days to develop an assessment plan and give it to you to review.
Once you sign the assessment plan, the school has 60 days to complete testing and conclude if your child is eligible for an IEP.