Canada is a wonderful country to live in - you will find it a much better experience than living in Switzerland (I am a Canadian stuck in switzerland right now).
Education: Canada just ranked 2nd overall of all OECD nations surveyed in terms of their education system - First was Finland. Each province controls their education system. Over the past 5 years, the system in Ontario has improved dramatically. "kindergarten" will soon be full days every day for younger children, and class sizes in the public school system are capped at a maximum of 20 children/class until end of grade 3 (age 9).

In the greater Toronto area, of which Mississauga is a part, >45% of the population does not come from Canada originally, and for many of the students, English is not the first language spoken at home. The school system is remarkably adept at bringing all these cultures and each child's language capabilities together - the focus on literacy is phenonmenal from age 3 onwards. There is ample extra support for students for whom English is a second language, and extra support for any children struggling with literacy/reading/comprehending English. All this from a public system! The schools have improved dramatically, and all for the better - this is the best time to move to the country.

Sports - there is a good emphasis on physical education at school and many sports are taught to all children as part of this program. Almost all schools also have sports teams in the junior grades (grade 3 and up) for sports such as softball, basketball, volleyball, track and field etc. There are ample ways in each community to also supplement what is happening at school - swimming, hockey, ice skating, gymnastics, dance etc. programs abound. Sports teams and clubs are a great way for your kids to meet other children their age and to make friends quickly in your community.

Transportation - this is the tricky part! You need to know that a third of the entire population of Canada lives in the greater Toronto/Golden Horseshoe area. That means that the entire population of all of Switzerland will be within a one hour drive of where you are located in Mississauga! If your office is in Mississauga, and you can find a nice house in this suburb, your commute should be fine, but you will need a car. If you want to live in Mississauga and work in Toronto (downtown), you can take what is known as the GO train - you can park at the station and the train is a very efficient way of getting to the downtown core. There is also a very basic subway system once you are downtown. The highways are very different than switzerland - many more lanes, and a definite rush hour in the morning and evening. You can locate yourself strategically to minimize your commuting time, but most people use cars to get around.

Living places - I would figure out what kind of neighbourhood you want to live in -suburb? downtown? short drive to work? near parks and trails? etc. and then you should be able to find almost any type of area to suit your needs. The housing market has been very hot in Toronto for the past few years, so prices are pretty high for housing right now, but there are low mortgage rates. Toronto and vicinity is full of wonderful suburbs with many conveniences and strong community feelings. A good real estate agent should also be able to assist you to pinpoint good areas to meet your needs.

Cost of Living - the income tax rate is much higher in Canada vs Switzerland (closer to 30 -40% depending on your level of pay). However, day to day cost of living is SUBSTANTIALLY less- everything from your food, groceries, utilities, car, clothes, gasoline, entertainment, etc. will be much more than 20% less than Switzerland (probably closer to 40% less). You need to investigate the tax implications though to be able to make a fair comparison.

Hope this helps!