Credit by exam is provided for students in the fall and spring. No fee shall be charged for an examination for acceleration provided by the District. If a parent or student requests an alternate examination, the District may administer a test purchased by the parent or student from a state Board-approved university. A student planning to take an examination for acceleration shall be required to register with the principal or designee no later than 30 days prior to the scheduled testing date on which the student wishes to take the test.