One out of five Swedish compulsory or upper secondary schools today is  independent. Before the voucher reform, the few private schools existing merely differed from public schools regarding ownership. Today, almost half of the independent schools differ more or less radically from public schools regarding pedagogical concept and methods to fulfill the curriculum. Around 10 percent of the independent schools are religious/confessional. More than six out of 10 independent schools are run as for-profit limited companies, a form for school operation that has become more common  throughout the years. And there are small, local schools-founded by teachers and headmasters and run as only one unit-alongside larger chain school companies that are represented all over the country. One school corporation is even listed on the Stockholm Exchange Market.