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The role and impact of <strong>private</strong> <strong>schools</strong> in developing countries: a rigorous review of the evidence<br />

rare example of evidence of the impact of <strong>private</strong> schooling over time, French and<br />

Kingdon’s (2010) village-level panel survey between 2005 and 2007 showed that an<br />

increase in the proportion of village children attending <strong>private</strong> school is associated with an<br />

increase in average student achievement overall during the 3-year period of study.<br />

Other high quality studies find a <strong>private</strong> school advantage even after controlling for the<br />

additional effects of <strong>private</strong> tuition. Given the high incidence of <strong>private</strong> tutoring<br />

(especially among <strong>private</strong> school students) in rural India and Pakistan (effectively<br />

constituting a double-advantage of <strong>private</strong> school students who can afford fees and <strong>private</strong><br />

tuition), the need to control for it when trying to isolate the true <strong>private</strong> school premium<br />

is clear. 7 Javaid et al.’s (2012) study in Pakistan finds that although controlling for this<br />

and other covariates causes the <strong>private</strong> school premium to decline somewhat, even with<br />

the most stringent analyses there is still a <strong>private</strong> school advantage: with students<br />

performing 0.038 standard deviations better than their government school counterparts. In<br />

other words, although <strong>private</strong> tuition had an independent positive (and significant) impact<br />

on pupil outcomes, controlling for it did not eliminate the significant <strong>private</strong> school<br />

premium. A study by Thapa (2012), using national data on School Leaving Certificate levels<br />

at secondary level in Nepal, also finds a large <strong>private</strong> school premium (as indicated by a<br />

pass rate of 45.1 percent for government school students and 87.2 percent for <strong>private</strong><br />

school students) even after controlling for the effects of <strong>private</strong> tuition. However, the<br />

study concludes that overall, it was a combination of school/teacher and family attributes<br />

of the students that together explained the better outcomes for <strong>private</strong> school children.<br />

The scale of differences between learning outcomes of <strong>private</strong> versus state students<br />

varies across studies, and is difficult to compare meaning<strong>full</strong>y, particularly where<br />

different statistical methods are used. In Andrabi et al.’s (2008) study of primary students<br />

in rural Punjab, the raw difference between public and <strong>private</strong> <strong>schools</strong> are deemed to be<br />

comparatively large – as indicated by the fact that in English, for example, an average<br />

child in a <strong>private</strong> school performed better than the top third of children in the public<br />

sector, even after controlling for parental education, wealth, age, and gender. Also in<br />

Punjab, and applying similar statistical controls, Aslam (2009) finds a ‘substantial’<br />

advantage for <strong>private</strong> middle school pupils when compared with their government<br />

counterparts. In Africa, where generally the evidence is more mixed than in India or<br />

Pakistan, Bold et al.’s (2013) analysis of a cross-sectional dataset from Kenya (national<br />

primary exam result data: Kenya Certificate of Primary Education, KCPE) uses an empirical<br />

methodology that rests on the understanding that the growth of <strong>private</strong> enrolment will<br />

only affect average test scores in a district. The authors find a large <strong>private</strong> school<br />

premium, equivalent to one standard deviation. However, one criticism of Bold et al’s<br />

(2013) study is that a significant proportion of students in the country do not reach grade<br />

8 and these students almost inevitably belong to the most socially disadvantaged<br />

backgrounds. This suggests that <strong>private</strong> <strong>schools</strong> raise achievement of the middle and<br />

higher income students which raises equity concerns. Tooley et al. (2011), using data from<br />

Nigeria and controlling for covariates and using various empirical techniques, find that<br />

<strong>private</strong> school students persistently achieve significantly better outcomes than<br />

government ones.<br />

Some evidence indicates variation in the relative performance of <strong>private</strong> school pupils<br />

in different subject areas. Kingdon (2008) concludes that <strong>private</strong> unaided <strong>schools</strong> are 27<br />

percent more effective than <strong>private</strong> aided <strong>schools</strong> in their mathematics teaching in Uttar<br />

Pradesh. Using data from Andhra Pradesh, Singh and Sarkar (2012) similarly find a <strong>private</strong><br />

school advantage in mathematics (though attainment was still lower than expected).<br />

Notably, however, in Kingdon’s analysis (2008), all three school types studied<br />

7 See Aslam and Atherton, 2014. This study was not included in the review as it is forthcoming.<br />

16

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