First of all, there're no separate "elementary", "high" or other schools in Russia. Secondary school ("srednyaya shkola") consits of classes 1-11 that are usually located in the same building. Classes 1-4 are called elementary school ("nachal'naya shkola"), but for my view it's just logical division, not really a separate school.

The main difference between classes 1-4 and 5-11 is that children in elementary are taught by one "universal" teacher in one constant class room. Main subjects are russian language, mathimatics, reading, study of nature, physical culture. Usually school takes 5 days a week, max. 3-4 lessons a day, 40 min. each.

Since 5th class pupils have separate teachers for every subject and travel from one classroom to another for different lessons. Every new year adds new subjects. Biology (5th class, derived from "study of nature"), geography(5), physics (7), technical drawing (7), literature(5), astronomy (11), etc, etc. Time pupil spends in school increases up to 6-8 lessons a day 40 min. each, 5 days a week. By the way, pupil has no influence on set of subjets in school, it's determined by state educational standards.

Constitution grants everybody right to get free nine-class education. After 9th class everyone can decide how he wants to continue his education...

...to be continued.