Works set in a school. School uniform cosplay is a classic and easy to reproduce.
School cosplay is a classic genre where school uniform cosplay is standard, easy to obtain and reproduce. Cultural festivals, club rooms, and classroom situations look great, and studio sets are also well-equipped.
Rascal Does Not Dream of Bunny Girl Senpai, The Quintessential Quintuplets, Lycoris Recoil, Monogatari Series, etc., many works can be sufficiently achieved with school uniforms + simple hairstyles.
Code Geass, Assassination Classroom, PSYCHO-PASS are difficult works that expand the world view with school uniform arrangements + weapons/props.