That's still not the norm in Russia. Instead, there are agreements between the schools and the nearby public swimming pools that their instructors will teach school children at a certain predefined time of the week. E.g., "between 10am and 11:30 am, the first three lanes in this pool are reserved for school number 42".
Yes if we talk about most of ex-USSR countries during the transition to 11-grade system. Some switched to 12, Lithuania switched back to 10 so grade comparison is a mess. To add some, that switch back in 1990 was done via extending elementary school, so actual 5th grade was equal in both 10- or 11-year program.