The school library profession has gone through an evolution since its inception in the early 1900s. School librarians hold strong to unwavering core principles that remain true throughout time. Students today are tech-savvy consumers of information. With smartphones and tablets galore at their fingertips, they have access to all the knowledge of the world. Arguments at the dinner table are quickly settled by a few seconds of Google searching. To showcase everything they know about a topic, students can put together movies and presentations in just a few minutes. Now that students have all of this access to technology, why are school librarians still important? The authors questioned middle and high school students and asked them to reflect upon their experience in school libraries. Some of their reflections are scattered throughout this article. Unexpectedly, students did not comment on the glitter of the 21st-century school library. No one talked about makerspaces or emerging technologies. They instead spoke to the core professional values, the golden threads that keep the foundational fabric strong and make the profession essential. Librarian core values are integral to teaching the whole child. They complement content-area standards by providing students with guidelines to address ethical and service issues. In this article, the authors explore the core values that continue to sustain them through the education evolution.