My foster son who spoke English from birth. Well, from an early age, came home from school and said his teacher had told him that he was pronouncing giraffe wrong and don't contradict her. "Giraffe should be pronounced giraffeee because it has an 'e' on the end." He ended up as a public speaker in English. Maybe the teacher is still there misinforming her pupils and not brooking any disagreement. ????