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English	Russian
at the top of one's class	впереди по успеваемости (He's reading a ton, he's doing math, he's really at the top of his class. ART Vancouver)
class in physical education	физра (разг. Andrey Truhachev)
class in physical education	занятие по физкультуре (Andrey Truhachev)
class in physical education	урок физвоспитания (Andrey Truhachev)
class in physical education	занятие по физической культуре (Andrey Truhachev)
class in physical education	урок физической культуры (Andrey Truhachev)
class in physical education	физкультура (Andrey Truhachev)
class master	классный руководитель (klassnyi rukovoditel'), a teacher who is also the responsible organizer of a class group in general-education schools. The post was introduced into Soviet schools in the early 1930's. From The Great Soviet Encyclopedia 1979 thefreedictionary.com arturmoz)
class monitor	дежурный по классу (VLZ_58)
class teacher	классный руководитель (scherfas)
end of class bell	звонок на перемену (Funny how teachers listen to the tardy bell, but not the end of class bell. VLZ_58)
form-class	классный час (in New Zealand (or home room) OLGA P.)
gym class	занятие по физкультуре (Andrey Truhachev)
gym class	занятие по физической культуре (Andrey Truhachev)
gym class	уроки физической культуры (Andrey Truhachev)
gym class	занятия по физкультуре (Andrey Truhachev)
gym class	физическое воспитание (Andrey Truhachev)
gym class	занятия по физической культуре (Andrey Truhachev)
gym class	физкультура (Andrey Truhachev)
gym class	физра (разг. (произносится "физрА", склоняется, напр., "на физре" (=на уроке физкультуры") Andrey Truhachev)
gym class	физвоспитание (Andrey Truhachev)
gym class	уроки физкультуры (Andrey Truhachev)
physical education class	физкультура (Andrey Truhachev)
physical education class	физра (разг. Andrey Truhachev)
physical education class	занятие по физической культуре (Andrey Truhachev)
physical education class	урок физвоспитания (Andrey Truhachev)
physical education class	урок физической культуры (Andrey Truhachev)
physical education class	занятие по физкультуре (Andrey Truhachev)
physical education class	урок физкультуры (Andrey Truhachev)
read round the class	поочерёдно читать вслух (в классе)
sink class	сводный класс из неуспевающих и недисциплинированных учеников
sink class	класс-болото