The literacy rate in Albania for the total population, age 9 or older, is about 99%. Elementary education is compulsory (grades 1-9), but most students continue at least until a secondary education. Students must successfully pass graduation exams at the end of the 9th grade and at the end of the 12th grade in order to continue their education.
Usually leave a tip if the service was pleasant and quality. The standard amount is 10 % above the receipt of the invoice. But do not forget that the staff make very little money, and their main income - tip.