I'm assuming first of all, that a "regional center" is located in the U.S.Typically, a parent or teacher can request a multidisciplinary evaluation (meaning a "cross-section" of school professionals such as a speech and language pathologist, a psychologist, social worker, etc.) by signing a "parental consent to evaluate" form at your local school district. They have 30 days to perform and deliver a determination from that point. In real life, however, these time frames get "massaged" to fit schedules as well as school years. It is ALWAYS a good idea to seek out support groups that are familiar with both the regulations involved as well as the school district (LEA).I would recommend calling your local chapter of the Autism Society of America (1-800-3AUTISM) and getting their input.