Many ways can be done to address the problem of students, one of them involving the students themselves (peer counselor). It required a standard model that can be applied by students as guidelines for the implementation of the guidance. Validity of the module it must be done according to the rules of various scientific tests. State University of Medan has designed the module and has conducted test for the module. The testing results showed that the five aspects, which consisted of 34 items in a module that is designed, is valid and reliable. The student can understand the module at department, faculty and university level. The correlation between aspects also indicates that the module is well integrated between aspects and equipped with a good internal consistency of the results. From the results of these test can be recommended, modules can be used in the implementation of peer counseling services.