The Future of Design Education working group on sustainability developed recommendations for integrating sustainability into higher education design curricula. The recommendations provide a foundation for design instruction, using well-established evidence-based tools, methods, and mindsets that apply to professional practice and support designers as advocates for environmental and social responsibility. The document identifies core ideas for sustainable design, organized under a set of topics. These topics include sustainability fundamentals; circular economy; whole systems thinking; sustainable innovation strategies; impact assessment, and laws and standards; and communication, collaboration, and leadership. A summary table captures each idea, along with corresponding discussion and learning outcomes (things students should know and do). Recommendations are tailored to three levels of study: for all design students, students expecting to practice in sustainable design, and students in elective or advanced study. Resources for such study are also included.