Why ocean are salty and great lakes are not? The source of river water are usually snow melt or rain, so it always starts off fresh. But minerals are also dissolved into the river water, so more minerals ultimately â¦ end up in the ocean.
The average annual boarding school tuition is $38,850. Of course, there are some schools with tuition as low as $10,000 and others as high as $60,000.
Printer-friendly version. According to Boarding School Review, the average boarding school tuition for a U.S. citizen is $46,750 per year (as of today, 10/29/13).he tuition ranges are incredibly vast, from a mere $2,000 per year to about $86,000 per year--although only the first five schools are under $10,000, and more than 250 are over $35,000 per year.