QS World MBA Premium also focuses on MBA student recruitment, but invites only business schools ranked in the top 200 internationally, according to the QS World University Rankings. The event aims to provide a more holistic overview of an MBA degree, with enhanced focus on pre- and post-study processes and insights. The QS World Grad School Tour focuses on international postgraduate programs, particularly specialised master's degrees and PhDs in FAME (Finance, Accounting, Management and Economics) and STEM disciplines. The QS World University Tour has an emphasis on undergraduate student recruitment, inviting undergraduate programs only. QS Connect MBA and QS Connect Masters differ from other event series’ in that an open fair format is not followed. Instead, candidates take part in pre-arranged 1-to-1 interviews with admissions staff, based on pre-submitted CVs and academic profiles. QS also offers universities an auditing service that provides in-depth information about institutional strengths and weaknesses. Called QS Stars, this service is separate from the QS World University Rankings. It involves a detailed look at a range of functions which mark out a modern, global university. The minimum result that a university can receive is zero Stars, while truly exceptional, world-leading universities can receive '5*+', or 'Five Star Plus', status. The QS Stars audit process evaluates universities according to about 50 different indicators. By 2018, about 20 different universities worldwide had been awarded the maximum possible Five Star Plus rating. QS Stars ratings are derived from scores on in eight out of 12 categories. Four categories are mandatory, while institutions must choose the remaining four optional categories. They are:  Stars is an evaluation system, not a ranking. About 400 institutions had opted for the Stars evaluation as of early 2018. In 2012, fees to participate in this program were $9850 for the initial audit and an annual license fee of $6850.