This case study analyzes the use of library school interns on subject-based teams for the social sciences, humanities, and sciences in the San Jose State University Library. Interns worked closely with team librarians on reference, collection development/management, and instruction activities. In a structured focus group, interns reported that the internship enhanced their professional and career development, but they desired greater feedback and mentoring than they received. The library gained staff for its large instruction program and successfully recruited talented former interns for professional openings. This analysis will help other libraries and library science schools to improve their internships and field experiences.