The authors investigated the relation between long- and short-term rubric use (including self-assessment), gender, and self-efficacy for writing by elementary and middle school students (N = 268). They measured long-term rubric use with a questionnaire. They manipulated short-term rubric use by a treatment that involved reviewing a model and using a rubric to self-assess drafts. The authors collected self-efficacy ratings 3 times. Results revealed that girls' self-efficacy was higher than boys' self-efficacy before they began writing. The authors found interactions between gender and rubric use: Average self-efficacy ratings increased as students wrote, regardless of condition, but the increase in the self-efficacy of girls in the treatment group was larger than that for girls in the comparison group, and long-term rubric use associated only with the self-efficacy of girls. (Contains 9 tables and 4 figures.)