sentences:  Jack O'Sullivan, of Fathers Direct, which campaigns for the rights of fathers, said that "while discrimination against single and lesbian women was wrong, the benefits of a father figure were proven by scientific studies".The Charities Act 2006 added to the traditional list of "charitable purposes" for which charities can be established (the prevention or relief of poverty, the advancement of education, the advancement of religion, and so forth) a requirement that their activities should be carried on "for the public benefit"; and it required the Charities Commission to determine how it would be established that the public benefit was being served.In pursuance of this requirement, in 2009 Leather instigated an investigation into private schools in order to determine whether non-profit education providers should continue to be accorded charitable status automatically.