How can i change the date of my piano theory exam if i had already registered?

my theory exam is the same day as my cheerleading competion, and i HAVE TO GO TO BOTH.

and i dont know what to do. i either have to do the theory exam on friday or saturday.and i cant do it on saturday because of the competiton, but i already registered, so how do i change the date of my exam?



AND i cant do it on friday, cause i have school. please ..help :(How can i change the date of my piano theory exam if i had already registered?
Miss school, duh.

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