Limited influence in decision-making. In many high-achieving nations where teacher collaboration is the norm, teachers have substantial influence on school-based decisions, especially in the development of curriculum and assessment, and in the design of their own professional learning. In the United States, however, less than one-fourth of teachers feel they have great influence over school decisions and policies in seven different areas noted in the SASS surveys. A scant majority feel that they have some influence over curriculum and setting performance standards for students, though fewer than half perceived that they had some influence over the content of their in-service professional development. And very few felt they had influence over school policies and decisions affecting either teacher hiring and evaluation or the allocation of the school budget.