SIR II™ Comparative Data
An important feature of the SIR II™ survey is that mean ratings for each survey question are compared with an appropriate national group of two- or four-year institutions. The four-year comparative data report also includes data from graduate classes that have used the survey.
Comparative data is available from:
- nearly 8 million SIR II survey questionnaires from institutions nationwide
- 107,071 classes from two-year colleges, representing over 2,400,000 students
- 117,132 classes from four-year/graduate institutions, representing over 5,270,000 students
Institutions can compare specific aspects of their SIR II survey results, including:
- major area of study: more than 70 subject areas available
- full- or part-time instruction
- two- or four-year/graduate programs
- class size
- class level
- class type — lecture/discussion/laboratory
Comparative vs. Normative Data
When the SIR II survey is administered, the institution and/or individual instructors control all aspects of the administration. For example, when and how the survey is administered within the classroom is determined by the institution or faculty member. Because of this local control, and because the sample of institutions does not proportionately represent all types of institutions, the national data represents comparative rather than normative data.
Because students typically use the favorable end of the scale in making evaluations, comparative data provide a context within which instructors and others can interpret individual reports. However, institutions may wish to supplement the SIR II comparative data with their own comparative data developed over time.
For more information about the SIR II survey, contact an ETS Advisor.