Law /
Poland student visa refusal - 'intention to leave' [51]
@ Gosc, I agree with you - My advice for a STUDENT is, unless you have no other options then don't bother with an appeal.
But, FYI; I personally know people that have appealed and saw changes. They were applying for a visa for business purposes. But it was such a big drama and it made some consular staff show the very worst of their very worst.
Keep in mind that while rules are clearly written in black and white, the ultimate decision making power in terms of issuing a Schengen visa (or not) is the personal discretion of the consul reviewing the application.
Even if there are no "red flags" the consul has the power to reject an application because he/she simply isn't satisfied with something - in the case of OP that applicant will leave before end of visa validity. For example, someone from India earning $1000 a month at an IT or engineering job has very a good reason to return to their home country, because with that salary they can have a decent life in India. On the other hand someone applying in the UAE with that same salary doesn't, because with that salary they are struggling to make ends meet. This is where local experience or know-how comes into play, and there are no written rules regarding this aspect for example.
Also, if the consul knows a person that has been given a visa (or more) in the past and has respected the terms of their visa (or visas), they have the option of issuing them a longer term visa than what the person has actually requested (6-12-24 months for example) So, believe it or not, there is a bit of trust building with the consol involved.