Tsinghua University. According to the information of the secondary vocational school network, Washington University in St. Louis ranks 14 in the United States and 107 in the QS world, which is equivalent to the A-level Tsinghua of domestic key universities. Washington University St. Louis, referred to as "WashU", is a private research university located in St. Louis, Missouri, USA. It is a member of association of american universities, University Research Association, Oak Ridge University Alliance and American Association of Independent Colleges and Universities, and is a "new Ivy League".