public IActionResult DeleteCatalogueStudent(int schoolId, int catalogueId, int studentId) { if (!ModelState.IsValid) { return(BadRequest(ModelState)); } Student student = _schoolRepository.GetCatalogueStudent(studentId, schoolId, catalogueId); if (student == null) { return(NotFound()); } _schoolRepository.DeleteCatalogueStudent(student, schoolId, catalogueId); return(NoContent()); }