Some of the more common placement settings include the general education classroom, an integrated class, a resource class, a self-contained class, and other settings, which include separate schools and residential facilities. A school system may meet its obligation to ensure that the child has an appropriate placement available by providing an appropriate program for the child on its own, consulting with another agency to provide an appropriate program, or utilizing some other mechanism/arrangement that is consistent with IDEA. The placement group bases its decision on the IEP and which placement option is appropriate for the child. The general education classroom is seen as the least restrictive environment. In addition to the general education teacher, there will also ideally be a special education teacher. The special education teacher adjusts the curriculum to the student's needs. Most school-age IEP students spend at least 80 percent of their school time in this setting with their peers. Research suggests students with special needs benefit from being included in general education and its curriculum.