The LEAPS project has been collecting school quality data from the Punjab province of Pakistan. The data from the first wave is publicly available for free. The second wave will be available by the end of year 2010. See Andrabi et al. (2009) "Do Value-added Estimates Add Value?" for detail.
The education sector in Pakistan is characterized with many poor quality schools (Grade 3 students learn grade 1 curriculum) and competitive school markets (private schools run by educated women in a village account for a third of total pupils enrolled).
The dataset is used by Bruhn and McKenzie (2010) in their simulation of which randomization methods perform the best.