This paper estimates the return to education using two alternative instrumental variable estimators: one exploits variation in schooling associated with early smoking behaviour, the other uses the raising of the minimum school leaving age. Each instrument estimates a 'local average treatment...

The 1973 Raising of the School Leaving Age in England and Wales has been used to identify returns to years' schooling. However, the reform affected the proportion with qualifications, as well as schooling length. To shed light on whether the returns reflect extra schooling or qualifications, we...