Abstract: Objective To explorehow often and how long does the SP-trainer to trainStandardizedpatients (SPs) to normalize their standardized assessments. Methods 2 SPs were included, one was senior and the other was junior. One senior SP trainer controlled the whole process. Results After 4 times standardized training, all SPs nearly well done the “sandwich”assessment completely. Conclusions It is at least 4 times (2 hours) in training the SPs who can use the standardized “sandwich” assessments style in assessing medical students’ inquisition smoothly.

Key words: Key Words: Standardized patient, SP-trainer, “sandwich” assessment