Soviet schools weren't really specialized. They could have some classes with a heavier focus on specific subjects but all changes were minor. So yes, coal mine

Soviet schools weren't really specialized. They could have some classes with a heavier focus on specific subjects but all changes were minor. So yes, coal miners learned the same stuff. Only after grade 9 kids could apply to a professional school that would teach blue-collar professions and that's the first divergence point. P.S. In Soviet/Russian schools "class" is literally a group of kids who study all subjects together from grade 1 to 11, they are very rigid.