兰德-教育调查研究中的学校贫困-免费或减价午餐能否被其他更可靠的衡量标准取代作为权重变量?(英)-2026
聚焦兰德-教育调查研究中的学校贫困-免费或减价午餐能否被其他更可靠的衡量标准取代作为权重变量?(英)-2026。RAND working papers are intended to share researchers’ latest findings and to solicit informal peer review. They have been approved for circulation by RAND Education, Employment, and Infrastructure but have not been formally edited.