Can students transfer from one school of witchcraft and wizardry to another?    I am aware that there are  and I'm aware of the fact that they enroll students based on their geographical range, as well as the decision made by The Educational Office of the International Confederation of Wizards, when it comes to foreign and overseas students.  But what if one student, who was learning in Hogwarts, decides to move to Durmstrang Institute? Is this allowed by the Ministry? Or is there a syllabus difference that makes transfers cumbersome?
Are there either examples, or a mention of this having happened, of students permanently transferring from one magical school to another in Potterverse?  Canon only please (books/JKR/Pottermore).  Please note that I am only asking about transfers, e.g. you must already be studying in one school. Therefore an example of Malfoys considering sending Draco to Durmstrang is not in scope, since that happened before he attended Hogwarts. Also, guest-studying during Tri-Wizard doesn't count as it wasn't permanent.  Also, if the answer is a "no", please provide evidence (other than "well I read the books before and I don't remember a single case like that", unless you have eidetic memory) from entire canon.
Moving here does not mean moving to a new city or something like that. I am talking about the people that just can't stay at one place. It is impossible for them to sit put at one place and relax.