60年代末和70年代初,美国的学前教育大规模展开,学前师资远远不够,尤其是在那些由政府出资为贫穷家庭儿童开设的补偿教育计划——先行教育计划里,一时间雇佣了许多未经专门培训的工作人员。在这种情况下,尽快提高师资水平成了刻不容缓的任务。70年代初,卫生、教育、福利部儿童发展局局长E·齐格勒博士提出了一个儿童发展协士(CDA)计划。该计划主要的目的是提高在先行教育计划工作的、没有受过正规师范培训的儿童保教工作者的技能。 In the late 1960s and early 1970s, pre-school education in the United States was launched on a large scale and the number of pre-service teachers was far from enough. In particular, many government subsidized education programs for poor families and children Unscheduled staff. Under such circumstances, as soon as possible to improve the level of teachers has become an urgent task. In the early 1970s, Dr. E. Ziegler, Director of Children’s Development of the Ministry of Health, Education and Welfare, proposed a Children’s Development Association (CDA) program. The main purpose of this program is to improve the skills of child care workers who are not formally trained in the PEP program.