While politicians come, and go, the universities that our most senior political leaders are educated in seem to remain largely the same decades after decade. Theresa May’s election gamble looks like it will pay off for her and the Conservative Party, but if he was elected, Jeremy Corbyn would be just the 5th post war British prime minister who is not an Oxbridge graduate. Of the 4 non-Oxbridge PMs, only Gordon Brown was a university graduate, in his case Edinburgh University. In a country of 65 million citizens, and over 160 universities, British prime ministers’ higher education seems to be moulded, almost exclusively, at Oxbridge. These optics will surely present challenges to the parties endeavouring to connect with voters in the run up to the British general election.
Social uniformity and groupthink can render cliques blind to alternatives. At the same, their exclusiveness makes the wider society suspicious of any contribution they make. Yet, networking is regarded as valuable in building trust, exchanging ideas, making connections, and acting cohesively. There is also the argument that we want the ‘best minds’ to be our leaders, and the assumption is that the best minds are forged in the ‘best’ institutions of learning.
Between 1937 and 2012, of the 340 cabinet ministers in the UK, 290 were university graduates. Of these 290, 182 were Oxbridge graduates. In Ireland, in the same period, there were 157 cabinet minister, 106 of whom were graduates and of these 66 graduated from either University College Dublin (UCD) or Trinity College Dublin (TCD). Thus, in both counties just two universities account for almost the exact same percentage of cabinet ministers who graduated university over three quarters of a century – 62 percent. The standout university in the UK is Oxford, which accounts for 119 of the 290 university educated ministers; while in Ireland it is UCD, accounting for 54 of the 106 graduates in cabinet.
Yet, these factoids, while persuasive, make it difficult to get a real sense of how concentrated an elite’s formation is, especially in comparison to others. When comparing top politicians’ higher educations across countries some obvious complications arise: the populations and their age profiles, the numbers attending higher education, the numbers and shares of higher educational institutions and the size of the political elite. To help gain a better comparative understanding we set out a range of indices that facilitate the direct quantitative comparison of elite formation systems.
Influence and exclusivity elements of elite formation systems
The indices we employ produce results that are comparable across institutions, jurisdictions and time (both long and short periods). The indices capture how elite a system is in the formation of a societal group by measuring the influence and exclusivity of that system. In turn, the influence of a higher education system comprises the proportion of cabinet ministers associated with institutes that produce them and the limited number, or
fewness, of those institutions. The exclusivity is also comprised of two aspects. First, the more alternatives there are to any one institute, the more exclusivity there is. Second, the more unequal the shares of each institution, the more exclusivity there is. The eliteness of a higher education system is the linked combination of influence and exclusivity.
We found that the higher education system in the UK that produced cabinet ministers was more elite and influential than the Irish system over the period 1937-1997 (see Figures 1 and 2); but this situation was reversed thereafter.


