This is the 10207th most frequent Japanese word.
関学
"関学" is an abbreviation for "関西学院" (Kwansei Gakuin), a private university in Japan.
Here, 関学 is used as an abbreviation for Kwansei Gakuin University, a private university in Japan, indicating the place of study in the sentence.
私の友達は関学に通っています。
My friend attends Kwansei Gakuin University.
In this case, 関学 refers to the entity of Kwansei Gakuin University, recognizing its graduates and their influence worldwide.
関学の卒業生は世界中で活躍しています。
Graduates of Kwansei Gakuin are active globally.
Here, 関学 is used to denote the host or organizer, Kwansei Gakuin University, of the aforementioned event in the sentence.