This class describes the performance of an assessment of a particular aspect of a patient’s condition. Such assessments employ a test or instrument, often a questionnaire, that quantify otherwise subjective observations. These instruments employ scoring systems which have been systemetized and validated. Standardized assessment tools create scores and (sometimes) sub-scores which are then used to determine the optimal placement and treatment plans for the patient and to track patient progress over time. Standardized assessment tools facilitate the collection of accurate information in a reliable and consistent manner, provide clinicians and treatment agencies with increased accountability, identify patient progress over time, and provide a basis to adjust treatment plans.