Little is known about the circumstances surrounding how teachers guide their students to understand the credibility and relevance of information they research on the Internet. This two-part qualitative, multiple-case study examined how 11 secondary teachers in Quebec approached instructing their students in critical online resource evaluation (CORE). In Strand 1, an environmental scan of the Quebec landscape was done focusing on materials available to teachers for CORE. This included a systematic review through an extensive search of the website of every English school board, as well as informal discussions with subject matter experts (SMEs) such as a professor of journalism and a professor specializing on information literacy. In Strand 2, teachers shared their varied approaches to teaching CORE in semi-structured interviews. Participants from both public and private schools were selected based on their interest in the study, the grade level they taught, and the subject matter. Within-case and cross-case analysis revealed an overall understanding and acceptance of the importance of CORE in its basic definition. Further, several patterns were observed across cases such as common approaches to teaching CORE. Some obstacles hindering teachers were uncovered including gaps in government curriculum documents such as the Quebec Education Program (QEP) and a lack of time for teachers to adequately prepare and plan to teach materials that they are generally self-creating. A strength, weaknesses, opportunities, and threats (SWOT) analysis completes the discussion. Implications for the future include more targeted professional development options for teachers and clearer direction from government-mandated curriculum. More research is necessary to expand the scope of understanding of CORE past this limited sample.