This research project explores the role of internships in a new curriculum designed to educate eScience librarians. Experiential learning was identified early on in the IMLS-funded project as a necessary aspect to give students field exposure to information-related developments of cyberinfrastructure-enabled science. Nine students were tasked to fill out a daily survey that captured their experience at academic and research libraries, field research stations, and national and discipline-based research centers. Analysis of these accumulated "diary" entries is underway to identify learning outcomes of the eSLib program, particularly two required, data-oriented courses the students mastered in the first year of the program. The analysis will also aggregate and trace longitudinally student skill application throughout the summer. Evaluation of student experience should enhance understanding of the relation between the eScience Librarianship program and what is needed by institutions tasked with managing data produced by computer and network-enabled scientists.