School districts have many constraints when planning for new classroom space. They must respond to shifting populations and overcrowded schools, aging infrastructure, limited capital funding and ever shrinking budgets. Relocatable classrooms are often chosen by administrators as an expedient solution to many of these complex issues. In recent years, manufacturers and organizations such as the Collaboration for High Performance Schools have worked together to improve the quality of relocatable classrooms. Many manufacturers are now capable of producing cutting-edge modular classrooms.