Individualized instruction is defined as a process by which each learner is assisted in developing his own unique path, which may vary not only in rate, but in approach and content as well. There is concern at the present inability to provide such programs. Students must be provided opportunities to receive instruction, each at his own level. To facilitate this, teachers must have an organization which moves emphasis from holding children together for instruction to consciously encouraging the greatest possible span of achievement. The Experimental Teaching Division of the University of Texas R& D Center in Teacher Education examined what happens to teachers and students as they move into new organizations of instruction, seeking to develop an organization in which to train undergraduates in elementary education. Team teaching was selected as the organization to be used in the schools. The team teaching organization is described, and individualized instruction within this organization is outlined. The need is for qualified teachers to implement such procedures; the challenge is to find ways to train such teachers. Efforts in these areas as conducted by the University of Texas R & D Center are described. (Author)