Gakkou ni Ikenai Watashi-tachi: Pride no Hate

Maho always had top grades all through junior high. However, when she entered high school, no matter how hard she tried, she could not keep up with her classes. And because it's a private all-girls school, she was surrounded by “winners” who had been born into wealthy families. Maho, who grew up in an ordinary household, acted as if her family was rich, too, but inside she was filled with a sense of inferiority. Then one day, Maho's classmates found out about her lie…? It all started with a trivial incident, but it blew up until she can't go to school anymore. It's a nightmare situation that anyone might face… This is the second volume of a highly popular series that sharply depicts girls who are unable to go to school!

(Source: Sho-Comi, translated)

Note: Chapter count includes a one-shot.