Dr. Roger Pierangelo is a New York State licensed clinical psychologist and has been in private practice for over 37 years, certified school psychologist, and a Board-Certified Diplomate Fellow in Child and Adolescent Psychology and Forensic Psychology. Dr. Pierangelo currently holds the office of Executive Director of the National Association of Special Education Teachers (NASET), Executive Director of The American Academy of Special Education Professionals (AASEP), and Vice-President of The National Association of Parents with Children in Special Education (NAPCSE).

Dr. Roger Pierangelo was also a full-time tenured Full Professor in the Department of Special Education and Literacy at Long Island University for over 20 years. He has been an administrator of special education programs, served for 18 years as a permanent member of Committees on Special Education, has over 30 years of experience in the public school system as a general education classroom teacher and school psychologist, and a consultant to numerous private and public schools, PTA, SEPTA groups and a consultant to CNN and US News and World Report on issues involving special education. Dr. Pierangelo has also been an evaluator for the New York State Office of Vocational and Rehabilitative Services and a director of a private clinic. Dr. Pierangelo has also been working for the Nassau County Matrimonial Center as an expert witness, court-appointed therapist and Parent Coordinator in separation and divorce cases for over 18 years

. Dr. Pierangelo earned his B.S. from St. John's University, M.S. from Queens College, Professional Diploma from Queens College, Ph.D. from Yeshiva University, and Diplomate Fellow in Child and Adolescent Psychology and Forensic Psychology from the International College of Professional Psychology. Dr. Pierangelo is a member of the American Psychological Association and New York State Union of Teachers.

Dr. Pierangelo is the author of the Special Educator’s Survival Guide and the Special Education Teacher's Book of Lists, published by Jossey Bass and author of 301 Ways to Be a Loving Parent, published by SPI Publishers. He is the co-author of The Educator's Diagnostic Manual of Disabilities and Disorders (EDM), The Special Educators Comprehensive Guide to 301 Diagnostic Tests, and The Special Educator's Complete Guide to 109 Diagnostic Tests, all published by Jossey Bass; the co-author of college textbooks titled, Assessment in Special Education: A Practical Approach(2nd ed.); Transition Services in Special Education: A Practical Approach; and Learning Disabilities: A Practical Approach to Foundations, Diagnosis, Assessment, and Teaching, all published by Allyn and Bacon; co-author of Why Your Students Do What They Do and What to Do When They Do It-Grades K-5; Why Your Students Do What They Do and What to Do When They Do It-Grades 6-12; Creating Confident Children in the Classroom: The Use of Positive Restructuring, and What Every Teacher Should Know About Students with Special Needs, all published by Research Press; co-author of The Big Book of Special Education Resources, and the co-author of an eight-book “The Educator’s Step-by-Step Guide to…” 10-book series, with the titles: The Educator’s Step-by-Step Guide to IEP Development, The Educator’s Step-by-Step Guide to the 100 Most FAQ Asked by About Special Education the Special Education Process, The Educator’s Step-by-Step Guide to Eligibility in Special Education, The Educator’s Step-by-Step Guide to Assessment in Special Education, The Educator’s Step-by-Step Guide to Working with Students with ADHD, The Educator’s Step-by-Step Guide to Response to Intervention (RTI), The Educator’s Step-by-Step Guide to Classroom Management for Students with Emotional and Behavioral Disorders, The Educator’s Step-by-Step Guide to Setting Up Your Special Education Classroom, The Educator’s Step-by-Step Guide to Classroom Management for Students with Autism, and The Educator’s Step-by-Step Guide to Classroom Management for Students with Learning Disabilities, The Classroom Teacher’s Behavior Management Toolbox published by IAP Publishers.

Dr. Pierangelo has also written numerous articles for the New York State Bar Family Law Review-Journal on issues involving separation and divorce including:

Pierangelo, R. & Giuliani, G. (2007). The reluctant teenager in separation and divorce cases. New York State Bar Association Family Law Review, 39 (2), 19-25.

Pierangelo, R. & Giuliani, G. (2007). Civility coaching: A missing piece in the separation and divorce process. New York State Bar Association Family Law Review, 39 (3), 18-25

Pierangelo, R. & Giuliani, G. (2008). Arena parenting: An effective solution for parents living together during the separation and divorce process. New York State Bar Association Family Law Review, 40 (1), 7-9.

Pierangelo, R. & Giuliani, G. (Fall 2009). Understanding individualized education programs (IEPs) when representing a parent whose child receives special education services. New York State Bar Association Family Law Review 41 (3) 16-26

Pierangelo, R. & Giuliani, G. (Spring 2010). The need for a marital assessment at the beginning of divorce proceedings when children are involved. New York State Bar Association Family Law Review, 42 (1), 4-9.

Pierangelo, R. & Giuliani, G. (Spring 2011). Devastating parental behaviors that impact children during separation and divorce cases. New York State Bar Association Family Law Review published Spring 2011.

Pierangelo, R. & Giuliani, G. (Winter 2016). Policy and practice considerations in the legal system for reducing stress and anxiety in the separation and divorce process. New York State Bar Association Family Law Review published Fall 2015.

Pierangelo, R. & Giuliani, G. (Spring 2019). Psychological Dynamics of Children Involved in Separation and Divorce Cases: Guidelines for Court Appointed Attorneys for Children. New York State Bar Association Family Law Review published Spring 2019. .