can't comment on how common that is bc english isn't my first language, but German is and Kafka translates just extremely well to English. There's something about his style, his syntax n stuff, that just lends itself well to English translations. Also, Kafka became popular in the anglophone world long before he became popular in German-speaking countries due to his work being discovered and becoming popular post-mortem, when Hitler had just risen to power and Kafka's books were being banned due to him being Jewish and an absurdist author. So Kafka only became popular in postwar Germany, when his work was reintroduced from the English-speaking world, where he's made a massive cultural impact.

To be fair most classes are called English and literature or something but yes translated books are very common

Fairly common to read at least a couple. We read Beowulf, journey to the west, tartuffe, and a bunch of greek tragedies like Antigone or oedipus.