The DRK-12 program invites applied research and development proposals, set within the context of formal preK-12 education, with potential to generate high quality and generalizable scientific evidence, and promote success for all teachers, and their students, in all STEM fields of study. Projects should result in research-informed and field-tested outcomes and products that inform teaching and learning. Teachers and students who participate in DRK-12 studies are expected to enhance their understanding and use of STEM content, practices, and skills.