Example image of eyePlorer eyePlorer map for 'School voucher': Education Public school (government funded) School choice Milton Friedman Free to Choose Free market Capitalism Private university State university system FedEx Socialization United Parcel Service United States Postal Service Supply and demand Liberal Democratic Party (Australia) Lobbying National Education Association United States Department of Education Private school Economic equilibrium National Conference of State Legislatures Establishment Clause of the First Amendment Supreme Court of the United States United States Constitution Zelman v. Simmons-Harris Chief Justice of the United States William Rehnquist Adverse selection Cream skimming Multiple sclerosis Virtuous circle and vicious circle Libertarianism Chile Education in the Republic of Ireland Sweden Per Unckel Barack Obama Pacific Research Institute Netherlands Special school (Netherlands) School struggle Third rail (metaphor) Belgium Hong Kong Kindergarten Chief Executive of Hong Kong No Child Left Behind Act Milwaukee Cleveland Ohio