Providing clear guidance to teachers is not a straightforward task for school systems: Teachers get information about what to teach and how to teach from many sources, some of which are beyond the control of school systems. When teachers get different, even conflicting, messages about what and how to teach from various sources, they likely…

Students with disabilities often face barriers that hinder their capacity to access general education curricula and show their learning. Modifications to curricula and lesson plans can help reduce these barriers. Modifications are changes to what instruction is delivered--which tasks students complete and what content they learn. Previous research…

Just as teachers' perceptions of instructional materials influence what they do with those materials, school leaders' perceptions of instructional materials influence their decisions about how and how strongly to support teachers' material use. The authors address a gap in existing literature by identifying what school leaders regard as key…