• The eXtraordinarY Kids Clinic at Children’s Hospital Colorado
  This is the world’s only multidisciplinary clinic dedicated to X and Y chromosome variations.  

USA

• Klinefelter Syndrome Information and Support
  
  
• AAKSIS
  
  
• Klinefelter Educational Support Team (KEST)
  
  
• Klinefelter Syndrome Support of North Carolina

International

• Klinefelter's Syndrome Association (UK)

• Klinefelter Organisation UK
  
  
• Nederlandse Klinefelter Vereniging
  
  
• Eutschen Klinfelter-Syndrom Vereinigung
  
  
• Hielke de Wolf (Blog and Resource - [Dutch])
  
  
• Klinefelter's Support Group of Western Australia
  
  
• Klinefelter's Syndrome Association of Canada
  
  
• XXY Klinefelter (Norway)
  
  
• Síndrome de Klinefelter (Spain)
  
  
• Translator
  
  
  
  
  

International

• Contactgroep Triple X Syndroom, The Netherlands (Translations in English, Français, Deutsch, Español)
  
  
  

• The XXYY Project - The mission of the XXYY Project is to build the capacity of parents and service providers to assist males with XXYY in leading purposeful, productive lives. 

• Tetrasomy and Pentasomy X Information and Support

• Genetic Alliance
  
  
• Chromosome Disorder Outreach
  
  
• UNIQUE - Rare Chromosome Disorder Support Group
• Unique's "Little Yellow Book" of rare chromosome disorders
  
  
• Neurodevelopmental Diagnostic Center for Young Children
  
  
• the focus foundation
  
  
• University of Leiden, Neurocognitive Development, Clinical Child and Adolescent Studies
  
  
• Chromosome Foundation
  
  
• Special Needs Alliance
  
  
• NORD (National Organization for Rare Disorders)
  
  
• PES (Pediatric Endocrine Society)

These are member-recommended resources that may be useful to help parents explain an X and Y chromosome variation diagnosis to a child or adolescent.  Please review these carefully before sharing this information with your child.
Also recognize that each of these may help you even if they do not specifically address your child's condition.  The general information presented in these, when combined with KS&A's brochures and FAQ, could help guide your conversation with your child.

These two pamphlets are available for order:
Klinefelter’s Syndrome pamphlet and The X-tra Special Boy and For Boys Only, A Supplement pamphlets, by D Plumridge,C Brackets, and S LaFranchi, $3.50 for the main pamphlet and $1.25 for the supplement. Attn: CDRC Publications, Oregon Health Sciences University, CDRC, P.O. Box 574, Portland, Oregon 97207, Phone: (503) 279-8342 - checks to: Child Development & Rehabilitation Center

Hormones and Me: Klinefelter Syndrome

The KS Story: You are not alone

Guide to Trisomy X

Sex Development: An Overview

International

• oii Australia

• Autism Speaks
  
  
• National Resource Center on AD|HD
  
  
• GRASP (Global and Regional Asperger Syndrome Partnership)
  
  
• CHADD (Children and Adults with Attention Deficit/Hyperactivity Disorder)

• Wrightslaw - Parents, educators, advocates, and attorneys come to Wrightslaw for accurate, reliable information about special education law, education law, and advocacy for children with disabilities.
  
  
  
• Wrightslaw Yellow Pages for Kids with Disabilities - "Find educational consultants, psychologists, diagnosticians, health care specialists, academic tutors, speech language therapists, advocates, and attorneys. You will also find government programs, grassroots organizations, special educations schools, and parent support groups." Find resources by state.
  
  
• National Center for Learning Disabilities - committed to ensuring that all students with learning disabilities graduate from high school with a standard diploma—prepared for college and the workplace. Learn more about our credo, programs, events, and more.
  
  
• Family Village School special education & early intervention resources - very useful IEP examples and documents
  
  
• greatschools.org
  
  
• CEC Smartbrief - News in special education. Published in proud partnership with the Council for Exceptional Children.
  
  
• SmartBrief on Ed Tech - News about technology's impact on education

• ILRU (Independent Living Centers Directory)
  
  
• NCWD/Youth (National Collaborative on Workforce and Disability for Youth)
  
  

• NDRN (National Disability Rights Network)
• icj - International Commission of Jurists - SOGI Casebook Introduction
• Wright's Law - Special Education Law and Advocacy