School psychologists can impact student outcomes by consulting with teams around data. The current study investigated the effects of consultation with Professional Learning Communities (PLC) teacher teams. The study included four teacher teams, observing their PLC practices and providing consultation. Each team was observed with a PLC-implementation rubric using a multiple baseline design, including baseline, intervention, and maintenance phases. The specific areas of observation on the PLC Implementation Rubric were "How Effective Teams Work," "What Students Need to Know and Do," and "Assessment for/of Learning." The data were visually analyzed and a nonoverlap of all pairs effect size was computed. During the intervention phase, each team chose an item to focus on from the same observation strand. Therefore, the data were analyzed on the single strand and the three strands taken together. The results from the study indicated a change in PLC implementation occurred when consultation was added, and the change was maintained after consultation ended. However, the improvements for each team during the intervention and maintenance phases were small in comparison to the baseline phase. In addition, teams displayed greater improvements in implementation fidelity on the single strand in comparison to the three strands taken together. Future research is needed to determine the impact of consultation with PLCs on student outcomes. Implications for research and practice, limitations, and future directions are discussed.