public string Insert(Teacher teacher)
        {
            string message = "Insertion Faield";

            bool isUnique = teacherGetWay.IsUniqueEmail(teacher);

            if (isUnique)
            {
                message = "Teacher is already Inserted";
                return(message);
            }

            else
            {
                int isSaved = teacherGetWay.Insert(teacher);
                if (isSaved > 0)
                {
                    message = "Save Successfully";
                }
                return(message);
            }
        }