The emphasis on single subjects persists even today. Very likely you moved from classroom to classroom, particularly throughout your secondary education, studying a different subject with each teacher. Yet there was more to your education. Perhaps you participated in athletics, or the band, or clubs, or student government, or made the choice not to participate in any extracurricular activities. All of these (including the option not to participate) are part of what we might call the contemporary curriculum. But there is more.