Yes. Under the Charter of Rights and Freedoms:
The Right to Privacy
(From Parents, Peers, and Teachers)
Is my privacy protected under the Charter?
Section 7 protects
your right to security and liberty, which can include your choice not to share your sexual orientation or gender identity.
Section 8 protects
you from unreasonable invasions of privacy.
Whether or not a school is required to keep personal information private depends on the province that you reside in.
