i have assignmentremark, assignment and assignmentsubmission table and there is teacher and student is also a diffrent table

now as a teacher i upload a assignment and that assignment student can submited on diffrent submissioncontroller and that give mark of that subitedassignment by teacher on assignment remark controller

so how i can merge this three controller in my proect to give best view in mvc.net step by step with example in controller

This is My AssignmentRemark Model code:

namespace VCS_MVC_Project1.Models
{
    public class AssignmentRemark
    {
        [Required]
        public int ID { get; set; }
        [Required]
        public int StudentId { get; set; }
        public Student Student { get; set; }
        [Required]
        public int TeacherId { get; set; }
        public Teacher Teacher { get; set; }
        [Required]
        public int Marks { get; set; }
        [Required]
        public int AssignmentId { get; set; }
        public Assignment Asssignment { get; set; }
    }
}

This is Assignment model Code:

namespace VCS_MVC_Project1.Models
{
    public class Assignment
    {
        [Required]
        public int ID { get; set; }

        [Required]

        public string Name { get; set; }

        [Required]
        [StringLength(300)]
        public string Description { get; set; }

        [Required]
        [Display(Name = "Attechment")]
        public string Attechment { get; set; }

        [Required]
        [DataType(DataType.Date)]
        [DisplayFormat(DataFormatString = "{0:dd/MM/yyyy}", ApplyFormatInEditMode = true)]
        [Display(Name = "Due Date")]
        public DateTime Due_date { get; set; }


        public Teacher Teacher { get; set; }
    }
}

this is the AssignmentSubmission modelCode:

namespace VCS_MVC_Project1.Models
{
    public class AssignmentSubmission
    {
        [Required]
        public int ID { get; set; }

        [Required]
        [Display(Name = "Files")]
        public string Files { get; set; }

        [Required]
        [DataType(DataType.Date)]
        [DisplayFormat(DataFormatString = "{0:dd/MM/yyyy}", ApplyFormatInEditMode = true)]
        [Display(Name = "Date")]
        public DateTime Date { get; set; }

        public Student Student { get; set; }

        [Required]
        [Display(Name = "Student Name ")]
        public int StudentId { get; set; }

        public Assignment Asssignment { get; set; }

        [Required]
        [Display(Name = "Assignment Name")]
        public int AssignmentId { get; set; }
    }
}

give the solution for quetion asked in first