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Model Reeva Steenkamp was popular and respected by all, the headmaster at her old school Greg Stokell, said on Thursday.
"She was a vibrant, friendly, diligent, and motivated student who was popular with and respected by staff and peers alike," he told Sapa.
"The St Dominic's Priory school community in Port Elizabeth is both shocked and saddened by Reeva Steenkamp's sudden and tragic death."
Steenkamp, 30, was shot dead at her paralympian boyfriend Oscar Pistorius's home in Pretoria on Wednesday night.
Steenkamp completed both her primary and high school education at the Port Elizabeth school, matriculating in 2001.
Stokell said the model achieved recognition for her good academic results, her participation in hockey and swimming, and in her capacity as a house captain.
She graduated with a law degree at the Nelson Mandela Metropolitan University.