[Solved] ASP.Net MVC DropDownList returning wrong selected value

DropDownList returning wrong selected value.

The first two record are showing different dropdownlist selected records please help.

 <div class="form-group">
        @Html.LabelFor(model => model.CLASS, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.DropDownListFor(model => model.CLASS, ViewBag.CityList as SelectList, "--Select Class--", new { @class = "form-control" })
            @Html.ValidationMessageFor(model => model.CLASS, "", new { @class = "text-danger" })
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.STREAM, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.DropDownListFor(model => model.STREAM, ViewBag.CityList3 as SelectList, "--Select Sex--", new { @class = "form-control" })
            @Html.ValidationMessageFor(model => model.STREAM, "", new { @class = "text-danger" })
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(model => model.SEX, htmlAttributes: new { @class = "control-label col-md-2" })
        <div class="col-md-10">
            @Html.DropDownListFor(model => model.SEX, ViewBag.CityList2 as SelectList, "--Select Sex--", new { @class = "form-control" })
            @Html.ValidationMessageFor(model => model.SEX, "", new { @class = "text-danger" })
        </div>
    </div>

below is my controller

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.Entity;
using System.Data.SqlClient;
using System.Linq;
using System.Net;
using System.Web;
using System.Web.Mvc;
using UNIFORMMANAGER.Models;

namespace UNIFORMMANAGER.Controllers
{
    public class STUDENTsController : Controller
    {
        private STOREEntities db = new STOREEntities();
        private STOREEntities1 db2 = new STOREEntities1();
        // GET: STUDENTs
        public ActionResult Index()
        {
            return View(db.STUDENTs.ToList()); 
        }      
    
        // GET: STUDENTs/Details/5
        public ActionResult Details(int? id)
        {
            if (id == null)
            {
                return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
            }
            STUDENT sTUDENT = db.STUDENTs.Find(id);
            if (sTUDENT == null)
            {
                return HttpNotFound();
            }
            return View(sTUDENT);
        }

        // GET: STUDENTs/Create
        public ActionResult Create()
        {
            List<Class> classlist = db.Classes.ToList();
            ViewBag.CityList = new SelectList(classlist, "no", "Class1");

            List<streamdata> classlist3 = db.streamdatas.ToList();
            ViewBag.CityList3 = new SelectList(classlist3, "atk", "Stream");

            List<Sexdata> classlist2 = db2.Sexdatas.ToList();
            ViewBag.CityList2 = new SelectList(classlist2, "atk", "Sex");

            return View();
        }

        // POST: STUDENTs/Create
        // To protect from overposting attacks, enable the specific properties you want to bind to, for 
        // more details see https://go.microsoft.com/fwlink/?LinkId=317598.
        [HttpPost]
        [ValidateAntiForgeryToken]
        public ActionResult Create([Bind(Include = "NAME,ACNOS,HOME,FATHER,MOTHER,NEXTOFKIN,HOMETEL,FATHERSJOB,FORMERSCHOOL,ADMDATE,BDATE,HOUSE,CLASS,STREAM,SEX,Photo,ADMNO,ACCOUNT,REPEAT,STATUS,STDTYPE,MATH,ENG,SCIENCE,SOCIAL,HISTORY,GEOG,LUG,REL,ACCT,COMM,ART,LIT,DIV,FRE,GER,ARAB,BIO,CHEM,PHY,HEALTH,AGR,HEALTHY,DATEDISMISSED,DATEABSCOND,DATECOMPLETED,tutor,autofield,missedexam,missedtest,MTCMK,MTCGRD,MTCPSN,ENGMK,ENGGRD,ENGPSN,SSTMK,SSTGRD,SSTPSN,SCIMK,SCIGRD,SCIPSN,TOTALMK,AGGR,POSN,engint,t296,t297,t298,t300,division,t301,t302,t303,missedb6,divisionb6,multipurposestatus,dda,parentac,parentbankcode,parentbankbranchcode,clearinghousecode,Parentbanktittle,indexno,t16,RELIGION,oldstream,CITIZENSHIP,POSITIONINFAMILY,LANGUAGE,HOMEADDRESS,VILLAGE,SUBCOUNTY,PARISH,DISTRICT,PRIMARYSCHOOL,PLEINDEXNO,PLERESULT,UCEINDEXNO,UCERESULT,Multipurposefield,avrg,t26,t36,t46,t56,t66,Changed,Classcontrol,Attendence,added,Username,Paydate,Rptno,mmobile,fmobile,Femail,Memail,Nkin,Rclass")] STUDENT sTUDENT)
        {
            if (ModelState.IsValid)
            {
                db.STUDENTs.Add(sTUDENT);
                db.SaveChanges();
                return RedirectToAction("Index");
            }

            return View(sTUDENT);
        }

        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {
                db.Dispose();
            }
            base.Dispose(disposing);
        }
    }
}