Glinda wants all the attention on her in Wicked, and she does everything she can to ensure that’s the case. The story of Wicked follows Elphaba and Glinda, who are roommates at Shiz University and form an unlikely friendship. However, Glinda, who eventually becomes the Good Witch of the North, wanted nothing to do with Elphaba at first, as she was thrown off by her green skin and believed herself to be better. In fact, at the beginning of Wicked, this is Glinda’s attitude towards all the students at Shiz University.

https://screenrant.com/wicked-glinda-shiz-uniform-not-wear-query/