I'm 15 y.o. citizen of Ukraine and currently am studying in Poland. I want to travel to Ukraine, but I'm not sure if I'll be able to cross the border alone.
I've got a "child's travel document" with a Schengen visa for 1 year with unlimited entrance/exit. I've also got a "legitymacja" from my school and an isic card.
I've already called polish and ukrainian border guards, they say it should be fine, but nobody gave me any reference to the law, so I'm not completely sure I'm not going to be kicked out off the train at the border.
Oh, hi! I'm 15 too, but I'm Polish :) And I think you should be able to travel to Ukraine alone, as my friend travelled by himself to USA (by plane) and I heard there wasn't any problem with that travel. Also if the border guards from both countries told you that there wouldn't be a problem, then I guess you really shouldn't worry :)
Yes, there's no special authorization required for a minor in travel, but before the trip it's always worth to obtain additional information on the procedures in the Ukrainian embassy or consular office.