Release 1949

Trello card

https://trello.com/c/lawfXBty/196-dev-update-the-change-school-button-to-say-select-school

Context

Users find the Change school button confusing when there's only one school list. Changing it to Select school will hopefully make it less confusing.

Changes proposed in this pull request

Update the submit button in the Change school page

Guidance to review

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