public StudentsController(IStudentsRepository studentsRepository, IEducationsRepository  educationsRepository,
     ICompetencyHeadersRepository competencyHeadersRepository, IEmailer emailer, ICompetenciesRepository competenciesRepository)
 {
     this._studentsRepository = studentsRepository;
     this._educationsRepository = educationsRepository;
     this._competencyHeadersRepository = competencyHeadersRepository;
     this._emailer = emailer;
     this._competenciesRepository = competenciesRepository;
 }
 public EducationsController(IEducationsRepository educationsRepository)
 {
     this._repository = educationsRepository;
 }