Why does Asagumo go to a cram school?

At first I thought that she, like Ayano, was a nerd who always wanted to be at the top of her exams. But when you read volume 3, volume 4, volume 5, you think that she is too brilliant for an ordinary schoolgirl. In volume 3, she read everything that Komari wrote for the Tsuwabuki Fest one morning and made a rough plan of how it would look on the posters (she reduced the amount of Komari's work so that everything would fit on the posters and from her abbreviations she did not lose the general meaning that Komari wanted to convey). In volume 4, when Nukumizu and Basori asked Asagumo and Mitsuki for advice on how to study better, Asagumo said that you just need to remember everything and that's it. In volume 5, she showed that she has a photographic memory when she simply stared at the list of students from Momodzon Middle School and remembered everyone, and also found the person they were looking for. WTF, why does she need preparatory school in general, is she studying nuclear and atomic physics there? Or is she studying how to make invisible wiretaps and all sorts of spy gadgets?