I have a polygon shapefile of school districts. I would like to both exclude data based on one field (district type) and symbolize the shapefile using a different field (tax rate). There are three different types of school districts (elementary, secondary and unified), and many overlap. I'd like to show only unified school districts and then use the quantities symbology based on using a different field. Is there a way to do this without creating a new shapefile?--I've searched through past threads and didn't see a similar post. Thanks for any suggestions!