To calculate the number of students who are not placed, subtract the percentage of placed students from 100% and then calculate that percentage of the total number of students.
From the pie chart, the percentage of students who are placed is 92%. Hence, the percentage of students who are not placed is:
\[
100\% - 92\% = 8\%.
\]
So, the number of students who are not placed is \( 8\% \) of the total number of students (1035 students):
\[
\frac{8}{100} \times 1035 = 83 \, \text{students}.
\]