Families can send letters or emails to their child's teacher or principal to request a special education evaluation. Here is a sample letter you can use.Evaluations help determine why your child is struggling and how best to help. They also determine if your child is eligible for services and supports. Dear (Principal's or Special Education Administrator's name):. This page presents a model letter or email you might write the school to ask that your child be evaluated to see if he or she has a disability. I would like a full psycho-educational evaluation together with appropriate testing for learning disabilities. Include specific information about your child's needs. Describe examples of your child's behaviors and difficulty in school. General education classrooms and spaces are the least restrictive.