Original sentence: Since the school founded its robotics team in 2015, Challoner's has competed in national and international competitions.The competition consisted of autonomous and remote controlled challenges with tasks requiring computer vision.The teams have been successful: at LIMUN 2017 over half of the 16 Year 12 students attending won awards and the Challoner's team won the conference overall
Edited sentence: Since the school founded its robotics team back in 2015, Challoner's has hit the spotlight on the international stage.The competition consisted of autonomous and remote controlled challenges with difficult tasks requiring computer vision.The teams have been very successful: at LIMUN 2017 over half of the 16 Year 12 students attending won awards and the Challoner's team won the conference overall