Educating parents and obtaining their participation can sometimes be difficult. Including parents in the earliest stages of program planning, and informal contracting, sometimes helps. Administrative Support principles have to balance many concerns. Training and acquisition of materials can be costly. In addition, there is concern over the amount of class time devoted to such non-traditional curriculum.
Successful programs try to contain as many components as possible.
Some results can be seen within one year, however, the best programs take several years and become standard elements of the curriculum.