It is to be ubderstood that SMOG Grades 13-16 indicate the need for college education;17-18 the need for graduate training;19 and abve,the need for a higher professional qualification comparisons show that SMOG Grades are generally two grades higher than the corrected Dale-Chall lever,which purport to indicate "the grade at which a book or article can be read with understanding" a less severe critertion than the one used here