Question: By what grade do all children in Sweden need to learn to swim?
About the article "Human swimming", section "Lessons".

Candidate passages:
Children generally do not swim independently until 4 years of age.
In Sweden, Denmark, Norway, Estonia and Finland, the curriculum for the fifth grade (fourth grade in Estonia) states that all children should learn how to swim as well as how to handle emergencies near water.
Most commonly, children are expected to be able to swim – of which at least on their back – after first falling into deep water and getting their head under water.
Even though about 95 percent of Swedish school children know how to swim, drowning remains the third most common cause of death among children.
In both the Netherlands and Belgium swimming lessons under school time ("schoolzwemmen", school swimming) are supported by the government.
Most schools provide swimming lessons.
There is a long tradition of swimming lessons in the Netherlands and Belgium, the Dutch translation for the breaststroke swimming style is even "schoolslag" (schoolstroke).
The children learn a variant of the breaststroke, which is technically not entirely correct.
In France, swimming is a compulsory part of the curriculum for primary schools.
Children usually spend one semester per year learning swimming during CE1/CE2/CM1 (2nd, 3rd and 4th grade).
In many places, swimming lessons are provided by local swimming pools, both those run by the local authority and by private leisure companies.
Many schools also include swimming lessons into their Physical Education curricula, provided either in the schools' own pool, or in the nearest public pool.
In the UK, the "Top-ups scheme" calls for school children who cannot swim by the age of 11 to receive intensive daily lessons.
These children who have not reached Great Britain's National Curriculum standard of swimming 25 metres by the time they leave primary school will be given a half-hour lesson every day for two weeks during term-time.
In Canada and Mexico there has been a call for swimming to be included in the public school curriculum.
In USA there is the Infant Swimming Resource (ISR) initiative that provides lessons for infant children, to cope with emergency situation when they have fallen into water.
They are learned how to roll-back-to-float (hold their breath underwater, to roll onto their back, to float unassisted, rest and breathe until help arrives).
The 2nd Grade Swim program offers second graders from local public elementary schools around New York the opportunity to learn swimming skills and water safety at their local YMCA.
The program emphasizes personal safety, personal growth, stroke development, water games and rescue techniques.
Currently, 18 public schools throughout the five boroughs are participating in the 2nd Grade Swim program.
It is supported by JP Morgan Chase and The Heckscher Foundation for Children. 
In many places, swimming lessons are provided by local swimming pools, both those run by the local authority and by private leisure companies.
Many schools also include swimming lessons into their Physical Education curricula, provided either in the schools' own pools, or in the nearest public pool.
The Department for Education in England includes learning to swim as a compulsory element in Primary School PE Curriculum.
At the end of year 6 (age 11), all children must be able to swim 25 metres (front and back) and demonstrate an understanding of water safety.
Schools can decide when and where pupils will learn to swim.
Many children in the UK learn to swim in lessons that are not provided by their Primary School and can swim 25 metres by the age of 6.
In Sweden, Denmark, Norway and Finland, the curriculum for 11-year-olds in the fifth grade states that all children should learn how to swim as well as how to handle emergencies near water.
Most commonly, children are expected to be able to swim 200 metres (220 yards) – of which at least is on their back – after first falling into deep water and getting their head under water.
Even though about 95 percent of Swedish school children know how to swim, drowning remains the third most common cause of death among children.
In both the Netherlands and Belgium, swimming lessons during school time ("schoolzwemmen", school swimming) are supported by the government.
Most schools provide swimming lessons.
There is a long tradition of swimming lessons in the Netherlands and in Belgium; the Dutch translation for the breaststroke swimming style is "schoolslag" (schoolstroke).
The children learn a variant of the breaststroke, which is technically not entirely correct.
In Germany and Austria, school swimming ("Schulschwimmen") is part of the elementary school curriculum leading to the entry level certificate "Frühschwimmer" for about 90 percent of the children (a 95% goal set by the ministers for education with actual percentages ranging as low as 75% in some schools).
About 50 percent reach a higher swimming level certificate during school swimming.
In Switzerland most schools offer a swimming course, however only 70% of the students take part in it which has led to the "Schulschwimmen für alle“ petition in 2007.
Unlike in Germany and Austria, a swimming test including a jump from the diving tower is common in Swiss schools.
In France, school swimming ("natation scolaire") is part of the curriculum for physical education in the 2nd and 3rd grade in elementary school, or for children aged between 4 and 6 years of age.
The aim is successful completion of entry into water then swimming for 50 metres, before floating for 10 seconds, then swimming on the front and on the back (for 10 metres each), ending with retrieval of an object from deep water of more than 2 metres.
In the UK, the "Top-ups scheme" calls for school children who cannot swim by the age of 11 to receive intensive daily lessons.
These children who have not reached Great Britain's National Curriculum standard of swimming 25 metres by the time they leave primary school will be given a half-hour lesson every day for two weeks during term-time.
In Canada and Mexico there has been a call for swimming to be included in the public school curriculum.
In Singapore, most swimming schools teach the SwimSafer Programme introduced by Singapore National Water Safety Council in July, 2010 with support from the Singapore Sports Council.
The SwimSafer Programme combines instruction in swimming and life-saving skills.
Example Swimsafer level 1 and 2 video http://swim2survive.blogspot.sg/ 
The Canadian Literacy and Learning Network outlines the 7 key principles of adult learning.
In other words, these 7 principles distinguish adult learners from children and youth.
1.
Adults must want to learn.
They will only learn when they are internally motivated to do so.
2.
Adults will only learn what they feel they need to learn.
In other words, they are practical.
3.
Adults learn by doing.
Active participation is especially important to adult learners in comparison to children.
4.
Adult learning is problem-based and these problems must be realistic.
Adult learners like finding solutions to problems.
5.
Adult learning is affected by the experience each adult brings.
6.
Adults learn best informally.
Adults learn what they feel they need to know whereas children learn from a curriculum.
7.
Adults want guidance.
Adults want information that will help them improve their situation or that of their children.  
Inflatable armbands are inexpensive, easy to find, and durable.
They can help children to build confidence and learn to swim earlier.
The amount of flotation provided can be decreased by deflating them partially.
During swimming lessons, children may do better in difficult lessons and be easier to supervise if they wear armbands.