Description of Research Report: Michigan Severity Rating Scales: Usage and Validity
For many years, increasing caseloads for vision professionals have caused concerns about the impact on educational services. Average caseload sizes in the literature have remained fairly consistent across decades, with 19.5 students per professional in the 1980s (Pelton, 1986), 18 students in the 1990s (Griffin-Shirley, McGregor, and Jacobson, 1999), and 22 students in the 2000s (Griffin-Shirley et al., 2004). In contrast, the optimal caseload for vision professionals has been approximated as eight students (Mason & Davidson, 2000). Discrepancy between ideal and actual caseload sizes may partly be due to how service levels are determined. Lack of consistency in determining the appropriate level of service for a given child can lead to inflated caseload sizes and ineffective services.