Rand兰德：2019-2024年美国教师教学材料使用情况研究报告（英文版）

In this report, we use data from six years of the American Instructional Resources Survey, from 2019 to 2024, to take stock of the state of instructional material use among K–12 English language arts, mathematics, and science teachers. Specifically, we track the rate at which K–12 teachers in these subjects reported using new instructional materials, how many materials teachers reported using, and how teachers reported modifying those materials. We also link teachers’ perceptions of school le