I started off with five A levels, Maths, Further Maths, Physics, Geography, and Chemistry. It was my school policy for all students to start on four in case you want to drop one A level, you can fall back onto three. And they didn't count Further Maths as a 'proper' subject, so I ended up doing five. Dropped Geography after two terms. I did enjoy taking four, personally I found it really interesting. To be perfectly honest, doing four a levels as opposed to doing three added little to no benefit when applying to universities, all of my offers were based on three A levels, however, it did ensure that if I messed up on one exam then I could fall back on my other three. That does beg the question though, should I have just done three and invested the time I put into my fourth subject across the other three?