A recent survey of the 50 states showed a wide variation in buy-back provisions for emigrating teachers who wish to apply prior service from another state toward their pension plan in the state to which they have moved. A chart shows the number of years of buy-back allowed and the specific requirements for claiming them in each of the states, listed in alphabetical order. Sixteen states have no buy-back provision at all, while others have buy-back limitations ranging from 4 to 15 years; 6 states have no limit on the number of years allowed, if individual provisions of the fund are met. On account of this great diversity, the author recommends the development of a "National Mobile Educator Retirement Fund" for those who need it, so that all educators may reap their appropriate reward for a lifetime of service to the profession. (TE)