One of the best graphic novels ever written. If you are planning to read only two graphic novels in your entire life, make sure you read this one and [b:The Complete Maus|15195|The Complete Maus|Art Spiegelman|http://d.gr-assets.com/books/1327354180s/15195.jpg|1658562] by [a:Art Spiegelman|5117|Art Spiegelman|http://d.gr-assets.com/authors/1206557373p2/5117.jpg].
I am not going to compare these two books, as the only thing that they have in common is that they are both graphic novels. And while "Maus" is based on the Holocaust, Persepolis is a coming of age experience for a girl living under suppressible conditions in Iran while spending some time abroad in Vienna (more as an exile than as a student).
As I said earlier, this is one graphic novel you should definitely read (Apart from Maus, of course).