"Doing stuff in your uniform is a high schooler privilege"
OR authors just prefer doing that in order to be free of having to think and draw casual outfits for all of them. It's because of things like this that casual outfits are such a rare and appreciated thing in school manga/ anime. :D
This chapter was like a roller coaster of predictable cliches but I didn't really mind. And may I mention again how cute and precious Honda-san is as always? ^_^