using of INotifyPropertyChanged

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You need INotifyPropertyChanged if you want a wpf form to be automatically updated when a property changes through code. Also some controllers might want to know if edits have been made in order to enable/disable a save-button, for instance. You also might be displaying the same property on different views; in this case INotifyPropertyChanged helps to immediately update the other view when you edit a property.

If you think that your form behaves well without INotifyPropertyChanged, then you can drop it.

Note that binding works even without INotifyPropertyChanged. See: Why does the binding update without implementing INotifyPropertyChanged?

I would implement the properties like this. In some rare cases it can help to avoid endless circular updates. And it is more efficient by the way.

 private string _firstName;
 public string StudentFirstName
 {
     get { return _firstName; }
     set
     {
         if (value != _firstName) {
             _firstName = value;
             OnPropertyChanged("StudentFirstName");
         }
     }
 }

Starting with C#6.0 (VS 2015), you can implement OnPropertyChanged like this:

private void OnPropertyChanged(string propertyName)
{
    PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}

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