>displaced; displacing; displaces

>transitive verb >1a: to remove from the usual or proper place >specifically : to expel or force to flee from home or homeland

https://www.merriam-webster.com/dictionary/displace

>that found that demographic change in gentrifying neighborhoods was a result of typical levels of population churn in lower-income neighborhood

No one is being expelled, or otherwise forced to flee a neighborhood because higher income people moved in, they are being excluded from continuing to move in due to lack of affordable options caused by exclusionary zoning policy.

Again there is a big difference in the implications between being displaced and being excluded. You should demand a refund from your school.