If your child's teacher has tried interventions and they have not helped, you should ask for a special education evaluation.
This is also called a pupil appraisal or 1508 evaluation. It's a series of tests to see if your child has a learning disability that prevents them from making progress in school. If they do, they will qualify for special education services. This means you will create an Individualized Education Program (IEP) to describe the services and special instruction that the school will give to your child.
Evaluation vs. Assessments:
See the Evaluation section in the menu to learn more.