1. A simulator for breast imaging examination comprising: a medical grade computer display; a data input device; and an electronic computer communicating with the medical grade computer display and the data input device, the electronic computer including: (a) an electronic memory system holding a data structure having multiple records linking mammographic images to expert recall instructions, the latter indicating whether a patient associated with the mammographic image should be recalled for additional imaging based on the mammographic image, the electronic memory system further holding a stored program; (b) an electronic processor executing the stored program to successively read the records of the data structure to: (i) display at least one breast imaging examination of the record; (ii) receive input through the data input device indicating a trainee recommended recall instruction; and (iii) output a report indicating divergence between the trainee recommended recall instructions and the expert recall instructions.