Englische Verbesserung

Ein Freund von mir hat diesen Text geschrieben...
Es wäre nett wenn jm verbessern könnte.
Vielen Dank im Voraus :)

Although the secondary education suffers from many shortcomings; American universities are among the best in the world.
They are effective frameworks and have forged many links with the business. They enjoy considerable financial resources: Harvard`s budget, for example, is 20 billion dollars.. In a federal country like the United States, the university system is decentralized and institutions of higher education enjoy a wide autonomy which allows them a big flexibility. After the Second World War the student matriculation increased dramatically: the number of American students rose from 3.5 to 8 million in 1960. This phenomenon is explained by the baby boom, by creating a university in west and central Canada, and finally by the donations made by major foundations.
In 2005, there were 4 182 higher education institutions in the United States, about 1 400 research units 81% of age group studied, which represents the highest rate in higher education in the world
In 1998, 35% of American citizens had a graduate degree. This is an increasing number comparing 11% in 1970. The federal government and universities spent $ 260 billion for higher education in 2000, representing 2.6% of GDP. Eight of the top ten universities in the world are American: Harvard, Stanford, Berkeley, MIT, California Institute of Technology, Columbia, Princeton and University of Chicago. Finally, 20% of 3 million of American students in America come from foreign countries. There are tuition fees you need to pay at every American university. These vary depending on the state (for public universities) or the prestige of the institution (for private universities).
The academic year is approximately 6 500 dollars in a state university and up to 40 000 dollars to Harvard. Just a few families can bear the costs of the higher education of their children.