Can I use the Vineland Classroom Questionnaire to evaluate a low-functioning 15 year old?
The Vineland Classroom Questionnaire was not standardized on students older than 12 years 11 months of age. Therefore, no normative data (e.g., standard scores) would be available for a 15-year old student. So using the Vineland Classroom Questionnaire for diagnosis or classification in this case would be inappropriate. However, if the purpose of the evaluation was for program planning or to obtain other descriptive data, then yes, Vineland Classroom Questionnaire can serve as a very useful information gathering tool for a 15-year old student. Using raw scores, age equivalents can be obtained at the domain (Table B.7) and subdomain level (Table B.8) for students 1 year 0 months of age through 18 years 11 months of age. In addition, adaptive levels can be obtained at the subdomain level (Table B.6).