Undergraduates enrolled in advanced courses in psychology estimated th
eir final course grades at the beginning of the semester. Estimates we
re collected before students received information about instructors' r
equirements and grading practices. Students were grouped by their cumu
lative grade point averages (GPAs) from the previous semester. Differe
nces were observed in estimated and actual grades earned. Low-GPA subj
ects showed the greatest overestimation of their final grades. Althoug
h high-GPA students did not significantly overestimate their grades, a
lmost 50% of their estimates were overestimate. Confidence ratings wer
e also collected. High-GPA students were significantly more confident
about their estimates than were low-GPA students, perhaps indicating t
hat low-GPA students possessed some awareness that their estimates wer
e inaccurate.