[Required]
        public double Quiz { get; set; }

        [Required]
        public double Test { get; set; }

        [Required]
        public double Assignment { get; set; }

        [Range(0 , 30 )]
        public double Project { get; set; }

        [Required]
        public double LabExercise { get; set; }

        [Required]
        public double FinalExam { get; set; }