Early Childhood Longitudinal Study [United States]: Kindergarten Class of 1998-1999, Third Grade

The Early Childhood Longitudinal Study, Kindergarten Class of 1998-1999 (ECLS-K) focuses on children's early school experiences beginning with kindergarten through fifth grade. It is a nationally representative sample that collects information from children, their families, their teachers, and their schools. ECLS-K provides data about the effects of a wide range of family, school, community, and individual variables on children's development, early learning, and early performance in school. This data collection contains the wave of data collected in the spring of third grade (2002). The third-grade data collection includes information about the diversity of the study children, the schools they attended, and their academic progress in the years following kindergarten. Other variables include child gender, child race, family background, childcare, childcare arrangements, food security, hours per week in child care, socioeconomic status, household income, highest level of education for parents and students, parents' employment status, teachers' evaluation practice, and usefulness of different activities in the classroom.

《1998-1999年度早期儿童纵向研究：幼儿园班级》（ECLS-K）专注于从幼儿园至五年级的儿童早期学校经历。该研究样本具有全国代表性，收集了儿童、他们的家庭、教师以及学校的相关信息。ECLS-K提供了关于多种家庭、学校、社区和个人变量对儿童发展、早期学习和学校早期表现影响的数据。该数据收集包含了三年级春季（2002年）收集的数据波次。三年级数据收集包含了关于研究儿童多样性、他们所就读的学校以及从幼儿园后学术进步的信息。其他变量包括儿童性别、种族、家庭背景、儿童保育、保育安排、食物安全、每周儿童保育时间、社会经济地位、家庭收入、父母和学生接受教育的最高水平、父母的就业状况、教师的评估实践以及课堂中不同活动的实用性。