This study investigated the effects of teacher, self and peer evaluation on preservice teachers' performance, knowledge and attitudes. Earlier research by the same authors revealed that students made significant improvements in their lesson plans under all three of these conditions, but the teacher-evaluation improved significantly more than the two student-evaluation groups. Therefore, relevant training and practice in the evaluation process were added in this study. All three groups made significant improvements from draft to final version of their plans, and the differences between the teacher-evaluation group and the two student-evaluation groups were non-significant. The authors attribute the stronger performance of the student-evaluation groups to their training on the evaluation task. Students' overall attitudes were significantly more positive toward teacher evaluation than toward peer evaluation, but did not differ significantly between these two groups and the self-evaluators. Several suggestions are discussed for further improvements in the training of self and peer evaluators.