The authors examined 38 school counselor supervisors' perceptions of the Discrimination Model (DM; Bernard, 1979, 1997) of supervision, replicating and extending Ellis and Dell's (1986) investigation of the DM with mental health counselor supervisors. Participants judged the dissimilarity of each unique combination of roles and foci of the DM. The authors conducted a confirmatory multidimensional scaling analysis to compare the implicit dimensions and constructs that school counselor and mental health counselor supervisors used to make decisions. Results suggested partial similarities in the conceptual maps of school counselor and mental health counselor supervisors. Implications and suggestions for future research are discussed.