The New York City Department of Education (NYCDOE), on behalf of the School Programs and Partnerships/Division of Teaching and Learning, seeks proposals from organizations experienced in providing high quality professional development to school leadership and instructional staff across content areas, with an overall focus on improving the classroom environment for learning and leadership development, while providing best practices to prepare students for the challenges of postsecondary education and work. The goal is to train educators to proactively plan varied approaches to what students need to learn, how they will learn it, and/or how they can express what they have learned, in order to increase the likelihood that each student will learn as efficiently as possible. Partners are also sought to assist administrators in understanding the concepts of sustainable leadership, particularly in an environment where principals have discretion in decision-making, and are accountable for student success.