Students spell only the words that are known.
In a test, students create strange sentences to avoid difficult but often important words. Teachers are often confused by good verbal behavior against the lazy appearing, if not intellectually embarrasing, written responses. The Underlining Option provides that, when students write essay tests or reaction papers, they should use the appropriate vocabulary but may underline all words they know or suspect they have misspelled. No points are deducted. This enables the teacher to better judge the student's intellectual capability or, at least, the knowledge acquired.