A teacher, administrator, or other employee having a contract of employment for a definite term shall not have such contract terminated or suspended for refusal to alter a grade or grade report if the request to alter a grade or grade report was made without good and sufficient cause.
"You do solemnly swear (or affirm) that the evidence shall be the truth, the whole truth, and nothing but the truth. So help you God."
OCGA § 20-2-940