A provider of therapeutic nursery services shall ensure that services: Are appropriate to the cultural and psychosocial developmental needs of the child; Are provided: For a minimum of 3 hours per day, 3 days per week at each site; and In either a free-standing program or as an integral component of a preschool program in which services are offered in a therapeutic milieu; Are provided by staff who: As determined by the program, are appropriately credentialed and privileged; and Organize and manage the milieu to: Foster clinically appropriate social, intellectual, emotional, and physical growth; Handle aggression in a nonpunitive manner that promotes growth and learning; Reinforce the child's ability to function with peers in a social environment; Model and provide opportunities for children to behave in age-appropriate ways, such as: Being playful; Assuming responsibility for carrying out routine activities; Exhibiting independence and initiative in planning their own learning; Getting along with others; and Being courteous; Facilitate the child's awareness of appropriate behavior in a predictable, constructive, and timely manner; and Help children to make choices and to negotiate disagreements among themselves, rather than resolving conflicts for them; Are provided in an environment that: Is consistent with existent standards of program design; Is organized so that the child can function in an environment with a minimum of adult direction; Has space that facilitates the activities of each learning center allocated to each center; Has sufficient space and separation between learning centers so that children can engage in activities of their choice without distracting or being distracted by others; Provides materials that are available for children's use and are otherwise appropriately stored; and Displays exhibits of children's work that reflect children's current experiences, developmental level, diversity, and individuality; Are designed to develop or improve the ability of the primary caretaker to care for the child; and Maintain linkage with schools and preschool programs to effect transition at the appropriate time and with the necessary support services.