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Unless John (Ralph Waite) can prove that he has graduated from high school, his lumber company will lose an important Army contract. Unfortunately, John's diploma is nowhere to be found, and thus he is forced to take a difficult equivalency test -- and he's none too happy about virtually returning to his scholar days at the tender age of 43. Elsewhere, new district nurse Mary Ellen (Judy Norton-Taylor) tangles with a superstitious mountain family which refuses to accept any form of "new fangled" medical treatment.