Complex sentence: In the mid- 2000s Korean universities pushing for more classes taught in English began to hire foreign-trained Koreanists of Korean and non-Korean origin to teach classes, often geared towards foreigners in Korean graduate schools.
Split into simpler sentences: In the mid- 2000s, Korean universities pushing for more classes taught in English began to hire foreign-trained Koreanists of Korean and non-Korean origin to teach classes. This was often geared towards foreigners in Korean graduate schools.