Phasing over a period of years the effects of the changes in real property assessments determined by the actual value initiative and authorizing real estate taxes for the City of Philadelphia and the School District of Philadelphia for Fiscal Year 2014 and thereafter by amending Chapter 19-1300 of The Philadelphia Code, entitled "Real Estate Taxes,"; providing for a tax and tax rate on real property; and by amending Chapter 19-1800 of The Philadelphia Code, entitled "School Tax Authorization," to further authorize the Board of Education of the School District of Philadelphia to impose a tax on — Open Common Ground