Heh, Kiddo82, I saw An Education at the Best Picture Showcase the year it was nominated (so, 2010), and I still remember it 11 years later. As good as Carey Mulligan is in Promising Young Woman, she stole my heart in An Education and that's what always springs to mind first for me when her name comes up.
Interesting comparison of this screenplay to Jojo Rabbit (which was my second favorite nominee in its year, after Parasite). It also won this category. Maybe the Academy does appreciate that degree of difficulty.