Hispanic Serving Institutions (HSIs)are animportant component of the nations higher education ecosystem and play a critical role in realizing the National Science Boards vision for a more diverse and capable science and engineering workforce1,2.Aligned with this vision and the NSF Strategic Plan3, the goals of the NSF HSI Program are to: Enhance the quality of undergraduate science, technology, engineering, and mathematics (STEM) education at HSIs. Increase the recruitment, retention, and graduation rates of students pursuing associates or baccalaureate degrees in STEM at HSIs. Meeting these goals requiresinstitutions to understand and embrace their studentsstrengths, challenges, and lived experiences. While this can happen in many ways and across many parts of an institution, theHispanic Serving Institutions: Enriching Learning, Programs, and Student Experiences (HSI:ELPSE)solicitationis specifically focused on studying and improving the student experience in the following settings: STEM courses, particularly for students pursuing STEM degrees; Certificate, minor, and/or degreeprograms; Academic departments or divisions; and Schools and colleges that represent a partof the entire institution (e.g., a School of Engineering or a College of Natural Sciences). Institutions are encouraged to consider how their mission and designation as anHSI could reimagine and/or strengthen courses, degree programs, departments, or divisions. The HSI:ELPSE solicitation welcomes projects that look to implement, test and refine promising practices and/or conduct research related to broadening participation or improving recruitment, retention, graduation and other positive outcomes for undergraduates in STEM. The HSI:ELPSEsolicitation supportsprojects that are purposefully designed to meet students where they are, accounting for both their assets and the challenges they may face. Identities and experiences are not determined solely by membership in a single monolithic population of students (e.g., Hispanic, first-generation, commuter, etc.). Consequently, institutions are expected to use institutional datato identify equity gaps, identify areas of need,and unpack the factors that shape students individual realities and shared experiences. Perspectives gained from these data should be central to the design of the project. This solicitation includes the following tracks: Implementation and Evaluation Projects (IEP): Levels 1 and 2 Educational Instrumentation (EI) Please see below for specific information about each track. Generally, proposals to theIEP track will center on one or more of the following: courses; curricular improvements; pedagogy; support structures inside and outside of the classroom; degree programs; and student pathways. The HSI:ELPSE solicitation will also consider proposals designed to increase access to computing resources and/or laboratory instrumentation needed to provide high-quality undergraduate STEM education at the following types of institutions: (1) HSIs in EPSCoR jurisdictions; and (2) HSI Primarily Undergraduate Institutions (PUIs) in all other (non-EPSCoR) jurisdictions.Please see the discussion of the Educational Instrumentation Track below for specific details.