Format
A data frame with 3435 observations on the following 11 variables:
vrq- A verbal reasoning score resulting from tests pupils took when they entered secondary school.
attain- Attainment score of pupils at age sixteen.
pid- Primary school identifying code.
sex- Pupils' gender: a factor with levels
Male and Female. sc- Pupils' social class (scaled from low to high).
sid- Secondary school identifying code.
fed- Fathers' education.
choice- Choice number of secondary school attended (where 1 is first choice, etc.)
med- Mothers' education.
cons- A column of ones. If included as an explanatory variable in a regression model (e.g. in MLwiN), its coefficient is the intercept.
pupil- Pupil identifying code.
Source
Paterson, L. (1991) Socio economic status and educational attainment: a multidimensional and multilevel study. Evaluation and Research in Education, 5, 97-121.
Rasbash, J., Charlton, C., Browne, W.J., Healy, M. and Cameron, B. (2009) MLwiN Version 2.1. Centre for Multilevel Modelling, University of Bristol.
Rasbash, J., Steele, F., Browne, W.J., Goldstein, H. (2012) A User's Guide to MLwiN v2.26. University of Bristol: Centre for Multilevel Modelling.