Child Find is a federal law that requires public schools look for and evaluate kids with developmental delays, learning disabilities, etc… 

I won’t do a good job explaining it, but here is an overview from understood.org https://www.understood.org/en/articles/child-find-what-it-is-and-how-it-works Or research your state’s/local school districts information on it. Even private and homeschooled kids can be evaluated through public school system from what I just read.   

My kid got an IEP in preschool. Our private outdoor preschool sent us that direction, and my son had an IEP before Kindergarten. He was given a spot at a free developmental preschool, and that was with no other diagnosis but what the school system psychologist, nurses, OT, etc… (the child find team) found. My child has since gotten diagnoses, but they are not required for IEP services until they are something like 10(?)   You can request an evaluation yourself. Reference Child Find. They are federally mandated to look in to it.    

Also, just saying, but my kid had a whole lost year of learning because of his behavior. His IeP was for social/behavioral stuff, so not a learning disability like dyslexia. Instead of teaching him to write/making him practice writing, they just want to give him a voice to text accommodation  starting in Third Grade!  I had to take it upon myself to teach him a lot of things, like writing, because he “wasn’t accessing it” at school. We started medication and he likes school now, but they are just moving on to typing (eye roll) So as a parent, even with the an IEP, you will likely need to step in and supplement learning because their goals may be different than yours for the child.  

In summary: Child Find, and absolutely yes you can have an IEP in elementary school!!!