One site for this national study was a classroom in the Susan Gray School. Procedures Families are invited to take part in research projects appropriate to their child's needs. For example, a family whose child has a language delay might be invited to take part in a research study comparing methods of teaching language. Researchers conducting projects provide information to families and answers parents' questions. Participation in research is voluntary.
Parents give their permission to take part in research in writing.
All individual records are confidential.