| Data file | Cases | Variables | 
|---|---|---|
| INT_COG09_S_DEC11 | 67948 | 227 | 
| 
            INT_PAR09_DEC11
                    
             This file contains data collected through the Parent Questionnaire. 
         | 
                    106287 | 90 | 
| 
            INT_SCQ09_DEC11
                    
             This file contains data collected through the School Questionnaire. 
         | 
                    18641 | 247 | 
| 
            INT_STQ09_DEC11
                    
             This file contains data collected through the Student Questionnaire. 
         | 
                    515958 | 437 | 
| INT_COG09_TD_DEC11 | 515958 | 273 |