Grading children with IEP

I would want to find a different way to give the students grades that show how they are improving relating to their IEPS. I feel that giving them grades on report cards relating to their IEPs would not be honest. Yes most of the time students on IEP will improve over time. Growing up I was on an IEP. It would have been nice to have a separate report that showed how I was improving but also seeing where I was compared to to other students would have been nice also.