Board. 1939, Alfred Lewerenz of the Los Angeles School District published several new formulas. Book length can be a good measure of reading ease. 9 The study of reading is not just in teaching. Una bacheca di annunci trans allaltezza della tua personalità? Cambridge, MA: Brookline Books. About one-third read at the 2nd to 6th- grade level, one-third at the 7th to 12th-grade level, and one-third at the 13th17th grade level. This was the last of the early formulas that used the Thorndike vocabulary-frequency list. A b Coleman,. 16 From these texts, he took 1,500 words he thought most people understood.