An IEP, Individualized Education Program, is essential for a child with special needs. The Sped teacher, preferably in collaboration with other experts in the field, should make an IEP tailor-fit to the concerned child's needs.
For a child who does not have an IEP yet, it is best to focus on the ADL or Activities of Daily Living, self-help tasks to make him/her less dependent on the parents, guardian, or caretaker.
The IEP that I made for a child who had developmental delay was personally implemented and indeed, I saw dramatic changes in him. Even one single change, no matter how small, is very fulfilling enough for a Sped teacher like me. --ARV