The Diagnostic Mathematics Information for Student Retention and Success (DMISRS) project was a collaborative project focused on first-year mathematics, which drew together lecturers in South African higher education institutions and other related organisations. Various themes were explored during the annual DMISRS symposia from 2018 to 2022. The projectu2019s culmination was a final DMISRS symposium held in November 2023, which focused on the case studies that examine the sub-projects that have emerged over the years. The symposia have tackled critical themes, including collaborative practices and courses that influence graduation rates, the psychological well-being of students, and innovative solutions in first-year mathematics, such as assessments, performance metrics, blended learning approaches and curriculum development. The case studies offer valuable narratives of day-to-day interactionsu00a0u2026