3. The system of claim 1 wherein the two learning centers are each provided with separate lesson storage means and separate comparator means adapted to compare a response from a participant's terminal with a programmed correct response in the lesson storage means.
3. The system of claim 1 wherein the two learning centers are each provided with separate lesson storage means and separate comparator means adapted to compare a response from a participant's terminal with a programmed correct response in the lesson storage means. 4. The system of claim 3 wherein a reinforcement signal is transmitted to the relevant participant's terminal when the comparison is favorable, wherein transmission of the reinforcement signal is independent of transmission rates between a particular learning center and the teacher's center.