On Dec 15th Andrea was listening to report on her two patients which she was assigned to that morning.  I noticed her leave the report room before before her one patient had been reported on.   After report was over, I walked into her patients room and she was not there.  I continued to look for her for 17 minutes to no avail. I then went to assist another student with a foley removal.  I returned to Andrea\'s room to find her assisting the patient in the door bed.  I called her out of the room and questioned her about the patient she was attending to.  At that point she stated the patient had pneumonia.  I informed her at that time the patient by the window had pneumonia and that she had left the report room before the patient by the door was discussed. I questioned her as to where she was.  She stated she was not feeling well and was in the bathroom.  I asked her why she had not come to me or the primary nurse to get report on the patient.  She said she did not know why and she would go look at the chart.  Andrea appeared very jittery and her behavior was erratic. I did allow her to stay at the clinical site with the understanding that one more occurrence will constitute removal from the clinical area.