The subjects at school

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The subjects at school.
The subjects in the curricula are grouped into seven areas of knowledge: languages and literature (includes Russian, as well as other native and foreign languages); mathematics (includes algebra, geometry, logic, statistics); sciences (includes physics, chemistry, biology); society (includes Russian and world history, law, foundations of modern civilization, world economics, international relations, and sociology); art (includes fine arts, music, world culture, and courses reflecting the cultural peculiarities of the region where the school is located); labor (includes labor education, professional training, and technical drawing); and physical training.
The number of hours in each area is subdivided into the federal, regional, and school components. The curricula comprise an invariable part, which is mandatory for all the schools, and a variable part, within which schools are free to make decisions of their own. The programs also provide for individual consultations, electives and optional courses, which are often taught by invited university professors, actors, artists, or people of other professions. For the last thirty years the number of subjects at schools have doubled. It can be as high as seventeen to twenty, therefore the schedule of classes is different every day of the week.