"required subject" is a grammatically correct phrase and it is commonly used in written English.
It refers to a course or topic that is mandatory for a student to study in order to complete a certain degree or program. Example: "In order to graduate, all students are required to complete a certain number of credits in the required subjects of math, science, and English."
The constitution of 2000 guaranteed equal status for Swedish, which remains an official language of the country and a required subject in Finnish schools.
Scrivener was a champion of the bar's so-called and often breached "cab-rank" rule in which a barrister is required, subject to availability, to take on any case, however unpopular the defendant or party might be.
Jennifer, who is fluent in Cantonese, English and Mandarin, China's national dialect, which is now a required subject in local schools, believes there are really only two camps among young Hong Kong people like herself.
Working with Hyman Bass, a mathematician at the University of Michigan, Ball began to theorize that while teaching math obviously required subject knowledge, the knowledge seemed to be something distinct from what she had learned in math class.
She worries, for example, that the Holocaust, a required subject in many school systems, is reduced to a collection of historical factoids rather than a lesson in the warped values of the Nazis or the moral valor of Christians who risked their lives to save Jews.
At present, RE is not included in the five required subject areas.
As above; the others don't exclude subjects, although they may have preferred or required subjects.
Daguerreotypes required subjects that remained still, and there is no subject more patient than the dead.
Latin literature, Latin composition, and Greek literature were required subjects of study.
The early photographic equipment of the day required subjects to sit still for uncomfortably long times, which tended to produce, as Mr. Williamson put it, a glazed-over effect.
The study, conducted by University of Minnesota researchers during Tuesday night's Republican debate, required subjects to be connected to electrodes to measure their tolerance for the senator.
