This Science Learning+ project will develop research-and-practice activities to explore how an integrated art, STEM, and society (what we refer to as STEAM) approach can expand science engagement and learning of youth aged 15-19, from low-income and non-dominant cultural communities. The project will review current knowledge, practice, and trends related to underrepresented youth, STEAM, and science engagement. The review will be used to develop: (1) A cross-setting research framework for investigating the relationship between informal STEAM learning experiences and young people's developing engagement with science. (2) Design principles for out-of-school STEAM programs that have proven effective in cultivating youth engagement with science and making relevant cross-setting connections. (3) Practitioner-friendly program evaluation tools that integrate findings from current research and practice related to cross-setting science learning of young adults especially non-dominant youth as it relates to STEAM learning experiences.