Science enrichment programmes housed outside traditional school settings offer unique opportunities to access and use authentic scientific tools and practices, especially for urban students whose school science experiences often lack resources. Yet opportunities to access these tools and practices are realized only when science teachers value them sufficiently to take advantage of them. This study examines how eight urban secondary science teachers evaluated a specific out-of-school science enrichment programme--a one-year partnership with a local university science outreach centre, which culminated in a half-day laboratory experience for their students. Teachers' perceptions were captured through interviews and surveys. Findings indicate that these teachers came to identify and value many of the potential benefits for out-of-school enrichment programmes reported in the literature as well as some additional ones. The teachers' also showed a shift over time with respect to their perceptions of the value of the out-of-school experience, moving from an initial focus on increasing test scores toward a greater appreciation for its impact on students' motivation and identity development. The study offers insight into secondary science students' and teachers' identity needs, and what universities can offer to address them. (Contains 3 tables.)