same reading grade level. The groups will move along at different rates and individuals within the groups will also move at different rates. Flexibility will save money for the school and save time for the students. When a student forges ahead of his group, he should be moved to another group. If, for practical reasons, a student completes a stage and cannot be put into a class at a higher stage,than instruction may be given him through the use of individualized reading (discussed in a later chapter) and through programmed materials. Remember that the purpose in grouping for instruction is for increased efficiency in teaching individuals. If one cannot deal effectively with the individuals in a group, then there is no purpose served by such grouping. Though in most cases you will be teaching in a traditional box type classroom, you should be prepared to suggest a better educational facility. Where possible, the communications laboratory approach might be used. It might have 15 to 20 individual learning stations. It should also be so flexible that it can be arranged for whole class and group activities. The laboratory should contain materials that can be used for group instruction and for self-instruction. A bibliography of such materials is given in Chapter XI. Lock-step instruction will lock some students in a reading stage. Differentiated instruction with differentiated materials is a vital principle of good basic adult education. Research on the use of mass media (which does not permit differ- entiated instruction) indicates that non-differentiated teaching fails with many students. It is, therefore, very expensive in terms of the results obtained. Furthermore, it is objectionable to many adult read- ing failures because it is identified with their failure. The concept of reading stages and reading levels aids us in providing instruction at the proper level according to the needs of the student. It also helps us to conserve teacher and pupil time and offers guidance in planning for the materials needed for literacy classes. The concept should serve as a guideline for all teachers engaged in adult basic education. Yet it must not lead to "lock-step instruction." Lock-step administrative practices have no place in adult educa- tion. Admission to literacy classes should be open at all times and not depend upon any academic calendar. Since the classes for each stage will generally contain students reading on several different grade levels, and since the rate of progress will differ from student to student, the classes should remain open to admit new students. These will replace those who complete one stage and go on to another or will replace those who have completed the final stage of the reading phase of the program. Where the literacy training is part of a self-contained adult basic education class, other flexible arrangements may be made. -9-