At the end of my first (of 3) years at RAFC in the late 50s, I was summoned to interview by my tutor. I had come second bottom in maths (behind a mate who subsequently did a tour on the Red Arrows) with 21%.
Believing that I would be told that I could not proceed to the flying phases of training, I was relieved to be told, "Well done, Wwyvern. Better than expected."
It's as well I left the mob a long time ago!