
Foreign students are defined as females or males who are nationals of any other country, besides Germany, (or stateless students) and are matriculated at a German higher education institution.
It is possible to differentiate between two categories of foreign students, namely Bildungsauslaender students and Bildungsinlaender students. The former are foreign students who gained their higher education entrance qualification at a foreign school and/or complemented their foreign school qualifications by attending a German Studienkolleg (preparatory course for higher education admission). Bildungsinlaender are foreign students who gained their higher education entrance qualification at a German school or who passed a Gifted Students Test (Begabtenprüfung) or an Aptitude Test (Eignungsprüfung) in Germany.
The annual number of students is taken as the number of students enrolled in the respective winter semester, i.e. students 2009 are the students of the winter semester 2008/2009.