The BNC Library San Jose manages its collection development and weeding policies through its cataloguing section, which oversees the library's 4 main branches and 5 extension branches. Collection development involves experts evaluating the existing collection and selecting new materials based on user surveys, donations, grants, academic programs, and the library's budget. Weeding procedures remove outdated, redundant, or damaged materials based on certain criteria like content, use, and physical condition. Donated and outdated magazines are shared with other libraries or institutions after 1-2 years at the main branch.