11.   He attended classes and began to improve his grades.

12.   In an investigation that ended last year, three Baylor University coaches were convicted of wire fraud for filling out tests for star basketball players to improve their grades.

13.   In the survey, some parents believe the Internet had improved the grades of their children.

14.   Newt Gingrich, who admitted to low marks on the environment last year, has a chance to improve his grades.

15.   Paterno loves the fact that Enis, who spent a year in prep school to improve his grades, was reared in such a positive family atmosphere.

16.   Phil Parker, director of the Guadalupe Teen Center, says most of the kids in the A.T. B.A.T program have improved their grades, some dramatically.

17.   So, instead of improving their grades by studying, they spend their time looking for suicidal roommies.

18.   That changed when Barkley got to Maine Central Institute in remote Pittsfield, a prep school powerhouse Barkley attended to improve his grades.

19.   The agent, docosa hexaenoic acid, is already being fed to Japanese schoolchildren to improve their grades.

20.   The experience not only rekindled her interest in school but it improved her grades and boosted her self-confidence.