PE A level is looked down on by some (including some on here!) but somewhat incorrectly IMHO.
Yes it’s not on the Cambs preferred list, but even Cambs says you only need take two of those A levels for an arts degree.
My DS took PE, got a great grade and got offers from four RG unis and the RG+ one he has ended up at (tho he didn’t have the grades to apply to Oxford or Cambridge). And no he does not do sports science – in fact he does biology so a pretty solid subject (not that sports sci is not haha). In fact he found PE A Level very sciencey (it is counted as a second science for STEM degrees by a lot of unis) and basically biology #2 for him. More direct use I suspect in his human-bio-focused degree than the maths he also took.
@Drangea if your DC will get the highest grade in PE then it is a good one to take, as for Cambs and Oxford it is top grades that matter above all. I am sure there are many students at Oxford and Cambridge with a third A level like drama or sociology. Not taking STEM courses maybe, but on the arts side. I agree it might be an idea to contact admissions tutors tho.
I would say tho as some others do, it’s a bit of an outlier. It’s basically a science A level so pairing it with history and Eng is a bit unusual. What’s driving it? Does he love biology? Why not take another more like the hums ones chosen, such as gov/pol or RS, especially given his suggested possible uni course choice? And yes I would also agree with a PP that he should carefully interrogate how PE A level will fit with his ability – does his preferred sport apply, what level does he compete at, is he actually really good at biology?
So basically echoing the excellent post from @MrsAvocet; I agree with the points about the need for a high standard in sport for a high grade overall. It’s also worth thinking about summer vs winter sports – a friend of DS’s offered sprinting which mostly is done in the summer – so they had to make sure his Year 12 season was up to scratch, as April/May of year 13 would be too late.
As lots of others say, btw, @OneGiddyRubyViewer's claim that “most” students at Oxford and Cambridge have 5-6 A levels is such nonsense. I see they claim that most of the students who started at Cambridge this year had 5 or 6 A levels. How can this be true? Thousands of students are in their first year at Cambs. Vanishingly few students sit more than 4 A levels (literally as others have posted fewer than 200 last year) so the uni would be empty. All the students I know who have gone to these unis in recent years have done three A levels, or, if four, they have had maths and FM as two.