This episode's headline: Supreme Court Watch; The Elian Debate; High Stakes Testing; The Art of Jazz; the People's Art. ANCHOR: JIM LEHRER; GUESTS: JAN CRAWFORD GREENBURG, Chicago Tribune; CHARLES KRAUTHAMMER, Syndicated Columnist; ROBERT SCHEER, Los Angeles Times; E. J. DIONNE, Washington Post; RICHARD RODRIGUEZ, Pacific News Service; JOSHUA REDMAN; CORRESPONDENTS: MIKE JAMES; TERENCE SMITH; BETTY ANN BOWSER; SUSAN DENTZER; RAY SUAREZ; SPENCER MICHELS; MARGARET WARNER; FRED DE SAM LAZARO; GWEN IFILL; TERENCE SMITH; ROGER ROSENBLATT; KWAME HOLMAN