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<p>The important point, in reply to TTparent and Colm, is that the total number of applicants wishing to study, let’s say Biology, at college X (out of more than 30 or so colleges) is much smaller than the total number of Biology applicants, which, in turn, is already much smaller than the total number of applications that Oxford or Cambridge receive as a whole for all degree courses (“majors”).</p>
<p>On top of that, students who don’t make the grade cut, e.g. are not predicted to get scores AAA or A*AA in 3 relevant A-levels, don’t even bother to apply (self-selection) or, if they apply, are not considered for interviews. The actual number of applications that a tutor on a specific subject, e.g. Biology, has to review at a specific college, e.g. Trinity, is therefore much smaller than the total number of common applications that an HYP adcom reviews for example. </p>
<p>Note that other countries take an even more drastic approach, which removes adcoms completely out of the picture. That is the case for example in China or in the French "grandes </p>