public class Model_College
{
  public Kolledjlist College { get; set; }
  public IEnumerable<Speslists> Programs  { get; set; }
  public IEnumerable<Informs> Informs { get; set; }
  ...
}

public ActionResult Detail(int? id)
{
  Model_College model = new Model_College()
  {
    College = ...,
    Programs = db.Speslists.Where(c => c.KolledjlistId == id).ToList(),
    Informs = db.Informs.Where(i => i.KolledjlistId == id).ToList()
    ...
  }
  return View(model);
}