Students who went to a private school are significantly less likely to get a good degree than state school students with similar A-level results, says a study conducted by the University of Cambridge¡¯s examinations arm.

by Cambridge Assessment found that, in Russell Group universities, private school-leavers were about a third less likely to achieve a first or a 2:1 than state school students with similar prior attainment.

In non-Russell Group universities, the chances of private school-leavers achieving a good degree were nearly halved compared with comparable state school students.

The research, published in the Oxford Review of Education and being presented in Glasgow this week at the annual conference of the Association for Educational Assessment ¨C Europe, reaches similar conclusions to a recent study conducted by the ³ÉÈËVRÊÓƵ Funding Council for England.

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Hefce was forced to apologise for wrongly stating that, in 2013-14, 82 per cent of state-school leavers who graduated from English universities achieved a first or a 2:1, compared with 73 per cent of independent school students.

In fact, the reverse is true.

Hefce stood by its finding that, when factors such as prior attainment are controlled for, state school students have an unexplained advantage. But?many more independent school students achieve the highest A-level grades.

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Like the Hefce research, the Cambridge Assessment study drew on data from the ³ÉÈËVRÊÓƵ Statistics Agency. But it draws on results for students who graduated in 2012-13, not 2013-14; it looks at the UK, not England; and it is based on a different methodology.

Authors Carmen Vidal Rodeiro and Nadir Zanini, from Cambridge Assessment¡¯s research division, say that previous research suggests potential explanations for the differential outcomes.

It could be that the elevated social class position of many private school students means that they have less incentive to perform well at university, the study says; or it could be that they have received more effective teaching at school, enabling them to enter higher education despite having ¡°less underlying academic potential¡±.

The main focus of the Cambridge Assessment research is the effectiveness of the A* grade at A level, which was introduced in 2010, as a predictor of university performance.

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The study says students with at least one A* grade were about 40 per cent more likely to get a first or 2:1 compared with students who did not receive an A*, once other factors were controlled for.

Students with two A*s had a similar advantage over students with only one, and students with three A*s enjoyed a further advantage.

The authors say that this demonstrates how a more differentiated grading system ¡°can be efficient in terms of student admissions at university, especially in the most oversubscribed courses and higher education institutions¡±.?

The Headmasters¡¯ and Headmistresses¡¯ Conference, which represents heads of leading independent schools worldwide, highlighted that the report excludes candidates taking four-year courses such as medicine, and students with alternative qualifications such as a pre-U.

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For independent schools, this would ¡°be a relatively large set of pupils, and arguably some of our strongest candidates, introducing significant bias into the research¡±, the HMC said.

¡°In the real world, more independent school pupils get A*s in the first place, and overall get better degrees,¡± said Chris Ramsey, universities spokesman for the HMC and the Girls¡¯ Schools Association, and headmaster of King¡¯s School, Chester. ¡°Previous, more thorough research shows it is wrong to conclude that more than a tiny number ¨C around 1 per cent ¨C of state school pupils entering at the same level will do better at university.¡±

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chris.havergal@tesglobal.com