In "Hazelwood" the U.S. Supreme Court said public school officials can censor school-sponsored expression for legitimate educational purposes. A content-analysis case study of student-written newspaper editorials found that more than three times as many editorials of criticism were published prior to the Court's decision. Argues that since the Court's decision, student journalists are less likely to criticize school policy or discuss controversial issues in their editorials. (Contains 42 footnotes.) (MLF)