#### Answer

My high school did not encourage creativity, or it did not encourage diversity.

#### Work Step by Step

It is not the case that my high school encouraged creativity and diversity.
Let p and q represent the following statements:
p: My high school encouraged creativity.
q: My high school encouraged diversity.
The statement is of the form ~(p ∧ q). An equivalent statement is ∼p v ∼q.
Therefore, the given statement is equivalent to:
My high school did not encourage creativity, or it did not encourage diversity.