In 2017, ARWU ranked 61st in the world. Bristol University is internationally renowned for its excellent teaching and research, exquisite equipment and high-quality students and staff. As the representative of the highest scientific research level in the UK, Buenos Aires University has always been the top famous university among the local people in the UK. It is also one of the most favored universities for British middle-class families, and has long been the first choice other than ox sword (Bristol has long been a natural alternative to Oxbridge). Today, the proportion of students from middle-class families is still as high as 87%, ranking third after Niu Jian. More than 40% of the University's undergraduate freshmen come from private schools every year, surpassing Cambridge, followed by Oxford and St. Ann's. British Prime Minister Churchill served as chancellor of Bristol University for 36 years. The current supervisor is Sir Paul NASS, former president of the Royal Society and Nobel laureate.