In this research we applied statistical methods to approach the main reason which increases students understanding level to the subjects , depending on statistical survey, which was done in the institute of technology / Baghdad during (2010 – 2011) and by using Factor Analysis . The research shows if there was any difference in the students evaluation of the faculty members performance on the basis of variables like gender, Department.
The research arrived to the following :
1- Teaching ways of staff have great effect toward students understanding levels in subjects
2- There are statistically significant differences between the mean of the students assessment of the faculty members attributed to difference in department. But, there were no significant differences due to gender.
Finally, we recommend some steps to improve student's understanding levels, depending on teaching staff performance .