Setting common goals, having a shared data sheet, and sharing progess wih goals are practical ways educators can collaborate to better serve students with ASD.
Read more in this article, Ten Collaboration Tips
The Autism Diagnostic Observation Schedule (ADOS) is considered the "gold standard" for ASD diagnosis. Here is a detailed description of ADOS from the Action Behavior Center
Yes! The Organization for Autism Research (OAR) has a website called Hireautism.org
If behavior issues are affecting his or her learning, or other students' learning, you can request a meeting of the IEP team to address these issues. Wrights Law is a website for parents and advocates that addresses a variety of topics related to supporting families and students with disabilities.
The Council for Exceptional Children has a 4 books series called Educating Children with Autism and Intellectual Disability and Autism Disorder
One common symptom of ASD is missing expected developmental milestones. A resource that helps parents track typical developmental stages and ages is the Milestones Checklist. Parents should seek their pediatrician's advice if their child is not meeting age-appropriate goals.