How can I obtain the coordinates of a selected item container in a WPF ListView

<ListView
    x:Name="TechSchoolListView"
    ClipToBounds="False"
    Width="Auto" Height="Auto"
    HorizontalContentAlignment="Stretch"
    VerticalContentAlignment="Top"
    ItemTemplate="{DynamicResource TechSchoolDataTemplate}"
    ItemsSource="{Binding Path=TechSchoolResearchList, Mode=Default}"
    SelectedIndex="1"
    SelectedValue="{Binding Path=SelectedTechSchool, Mode=Default}"
    SelectionChanged="TechSchoolList_SelectionChanged"
    ItemContainerStyle="{DynamicResource TechSchoolItemContainerStyle}"
    ScrollViewer.CanContentScroll="False"
    ScrollViewer.VerticalScrollBarVisibility="Disabled" >
    <ListView.Background>
        <SolidColorBrush Color="{DynamicResource PanelBackgroundColor}"/>
    </ListView.Background>
</ListView>

UIElement selectedContainer = (UIElement) TechSchoolListView.ItemContainerGenerator.ContainerFromIndex(TechSchoolListView.SelectedIndex);
        Point cursorPos = selectedContainer.TranslatePoint(new Point(selectedContainer.DesiredSize.Width, 0.0), Page);
        PanelCursor.Height = selectedContainer.DesiredSize.Height;
        PanelCursor.Margin = new Thickness(400, cursorPos.Y, 0.0, 0.0);