这是一份美国疾病预防控制中心(CDC)对所有公立、私立和州立学校中从幼儿园至12年级的膳食营养标准实施情况调查报告。时间分别为2000、2006和2014年,样本量为554~944所学校,应答率为66%~71%,目的是评估国家、地区、学校和班级等不同层面学校健康政策和措施实施效果。近年来,美国国民的疾病谱改变引起了广泛的关注和重视,从政府层面对儿童、青少年健康政 This is a CDC survey of dietary nutrition standards from kindergarten to grade 12 in all public, private, and state schools. With a sample size of 554 to 944 schools in 2000, 2006 and 2014 respectively, with a response rate of 66% -71%. The objective is to assess the effectiveness of implementing school health policies and measures at different levels of national, regional, school and class levels. In recent years, the changes in the disease spectrum of the U.S. nationals have drawn widespread attention and attention. From the government level, the health of children and adolescents