Ernest J. Ashbaugh, Lippincott's Horn-Ashbaugh Speller For Grades One to Eight
“ Not only are those words which most commonly give difficulty arranged for, but the method of testing insures that each pupil will eliminate his own peculiar errors. No pains have been spared to obtain this thoroughness without wasting the pupils' time in mere routine review.During the week in which each lesson is taught for the first time, each pupil is tested three times on every word in the lesson. He spends his time in concentrated attack on the words which have given him difficulty. One month later this lesson is given as a test, and the words missed by each pupil re-learned by him. ”
