Invite parents into the classroom to tour the classroom emphasizing the features that reflect DAP such as displays that are at a child's eye level, labeled materials, centers etc.
Provide resources and information about DAP to parents, in a family library section or in newsletters, e-mails, websites, and in conversation.
Post information in your classroom about DAP and what you are doing in your classroom.
Create printed labels and materials that briefly describe how activities promote development in different ways and for different levels. This will help your parents and administration to understand.