Some doctors and education groups say they worry that children are being pressured too much by a growing number of standardized tests. Pediatrician Brad Pfau says his office in Western Columbus fills up every time proficiency tests roll around. He says children come in with migraines, vomiting and symptoms of depression. The U.S. department of education says evaluations are a part of life and the tests help districts monitor the effectiveness of their class work. However. Harvard Psychiatrist Alvin Poussaint says anxiety could interfere with concentration performance. Parents say they try to convince their children that grades in the tests don’t matter. And schools try to put students at ease by providing snacks and morning exercise sessions.