Instructions for Working with Delaware School Feeder and Legislative District Interactive Maps



This map can be broken into three separate sections.  The first part (# 1 below) is the menu where you decide what you want to see on your map.  This is done by clicking in the square boxes beside each menu item.  The second part (# 2 below) is the actual map where the choices you make from the menu are displayed.  The third part (# 3 below) contains a tool bar which allows you to search for active features, zoom in and out, identify items, etc.




Directions for selecting map layers (menu items) from section one.


To place items on your map simply check or uncheck the square box next to the item you want mapped.  When the map first opens Towns and School Districts are already turned on by default.  You can turn these two items off by un-checking them if desired. 


Certain menu items cannot be checked while others are selected, and will reset menu items that are in conflict.  For example checking All Public Schools will turn off any other school types selected above it (elementary, high, charter, etc.).


Some menu items are scale dependent and will not appear as choices until you are closely zoomed into an area on the map.  For instance, City / Town always appears as a selectable map item; however as you continue to zoom into smaller areas, Highways and Roads also appear as a menu choice and are automatically turned on.  They can be turned off by un-checking if desired.


Labels are also scale dependent.  When viewing a map of the whole state few labels are shown.  However as you zoom in closer, labels for selected items will begin to appear depending on how densely packed the items are in relation to one another.  


Making a menu item Active by clicking on the round circle next to it (only one item can be active at a time) forces the tool bar to use the selected item for searches, queries, web links, etc.


Clicking the top left tool bar button  switches between the Menu of items you can place on your map and the Legend for those items you have selected.


Directions for using the Tool Bar (section three).


A brief description of each Tool Bar button is provided below:







(See Tool Bar Examples Below)












1)       How to Identify features on your map:


In this example we will use the identify tool to  view the details of Delaware High Schools.

Click the square box next to High Schools in section 1 to see all the public high schools on your map, and check the round circle to make this layer Active in the Tool Bar.

 Now click the  Identify Tool Bar button  to activate the Identify function.  Move your mouse so that the crosshair + is on top of the school furthest north at the very top of the state and left mouse chick.  At the bottom of your map you should now see the following information:





The high school furthest north in Delaware is Concord High School in the Brandywine School District.  You can now left mouse click on any high school to see its name and school district.


Now make Cities / Towns the active layer by clicking on the round circle next to it in section 1.   You can now click on any yellow area in the map to get the name and population of the town or city.  The Identify Tool will work with every layer listed in section 1 if the round circle is checked next to it making it active.  As you zoom in on an area using the Zoom In Tool Bar Button  labels will automatically appear on your map for Visible Layers.  Click the Zoom To Full Extent button  to return to the full state view.


2)      How to search for features on your map:


                  Searching for an elementary school


Click the square box next to Elementary Schools in section 1 to see all the elementary schools on your map, and check the round circle to make this layer active in the Tool Bar.

  Now click the binoculars  from the tool bar in section 3.

Next enter Milford into the box provided at the bottom of the page, and press Find String.




You should now see the following results at the bottom of your screen.







As you can see there are two Elementary Schools in Delaware with the word Milford in their address.  To see Ross Elementary School click on the number 2 in the left column.  The map will now zoom to Ross so that it is highlighted in blue and appears in the middle of your map.  To un-highlight the school click the Clear Selections Button from the Tool Bar .  Chick the square box next to Highways to have them appear on your map.  Zoom in to a small area around Ross Elementary using the zoom button .  You will now see all the roads around the school with their names.  Un-click Roads and then Highways to remove them from your map, finally click the Zoom to Full Extent tool bar button  to return the map to the full state view.  If you had entered Ross instead of Milford into the find box above, the results would have only returned one school.


This same set of steps will allow you to search for Cities and Towns, Highways, Roads, School Districts, Private Schools and Day Care Centers.  It is important to remember that a layer has to be Active (check the round circle) in order to search it for names.  Lastly, if you do not find the item you are searching for, try again using less information (i.e. enter Cab instead of Cab Calloway School of The Arts).


3)      How to Pop-up Websites for selected layers on your map:


                  Bringing up School Profile Websites

                  (Note: you may have to disable popup window blocking for this site on some browsers, click here for


Click on the round circle next to School District to make it Active .  Now click on the Hyperlink Tool  to activate the websites for each school district.  Finally move the crosshair + over any school district and left mouse click, a new page will now open with the selected district website displayed.


Three layers on this map contain web links:

Public Schools (elementary, middle, votech, charter, etc.)

City / Town

School District


Not every Town has an active web site, if you click on a town that does not have a site you will receive a message saying “No Site Available”.


4)      How to Query map features to identity specific sites meeting your criteria:


                  Find all the Elementary schools in Delaware with an enrollment greater than 800


Click on the square and circle next to Elementary Schools .

Now click on the Query Tool  to activate the query box on the bottom of your screen.

In the first box on your left click on the  and select ENROLLMENT from the list.

 Since we want all schools with enrollment greater than 800 choose the Operator  ‘>’ from the second box .   Now enter the number 800 in the third Value box  .  Finally click the ‘Add to Query String’ button  to automatically generate your Query statement and press the Execute  button to run your query.  Four schools should now light up on your map and their names should appear at the bottom on your screen.









Complex Queries – Find all Elementary Schools with enrollment less than 500 in Zip Code 19711.


Press the Clear Selection  button to remove the results of your last query and re-click the Query tool  to start another session. Select ENROLLMENT from the first Field Box, the less than sign ‘<’ from the second Operator Box and enter 500 into the Value box and press Add to Query String.  DO NOT PRESS EXECUTE.  Now press the ‘And’ button  , the word ‘AND’ will now appear in your Query String box.  Next return to the first Field box and select Zip , move right to the Operator box and select ‘ =’  , and  enter 19711 into the Value box . Finally press Add to Query String   and you are ready to Execute your new Query.  Press Execute  - two schools should light up on your map and the following should appear on the bottom of your page:





If you were to click on the Rec 1 or 2 in the table above, the map would zoom to the two schools listed.  Click Clear Selection button  and the Zoom to Full Extent button  to return your map to where you started.


The Query tool can be used on any layer displayed on the map.  This tool is especially useful when working with the Poverty, Income, Language Difficulty, and other layers listed at the bottom of the Table of Contents shown in section one.



5)      How to create buffers around selected map features

Find all Day Care Centers within half a mile of North Georgetown Elementary School


First we need to find the elementary schools in Georgetown.  Click on the square and round circle next to City / Town to make layer visible and active .  Now click on the Find Tool  and type Georgetown into the box provided at the bottom of the page, and press Find String.



You should only see one result at the bottom of your screen.   Click on the number 1 to the left of Georgetown to zoom to this town.  Now click on the square and circle next to Elementary Schools to make this layer visible and active   .  Click the Clear button so that nothing is selected .  You should now see two elementary schools on your map; North Georgetown and Georgetown.  We are now going to select North Georgetown Elementary by drawing a square around it with the Select Tool  .  Press the select tool  then move the crosshair + over to North Georgetown Elementary, hold down the Left mouse button and draw a square around the school.  When you release the button North Georgetown will be highlighted in blue  . 


Now we are going to identify all the Day Care Centers within a half mile of our school.  Click on the square next to Day Care Centers  so that they appear on your map.  Now click on the Buffer Tool  to create the half mile buffer around our selected school.  In the first box at the bottom of the page that says No Layer click on the selection arrow   and choose Day Care Centers from the middle of the pop-up box.  The Highlight features from box should now look like this:

 .  In the next box enter .5 to select the area within half a mile of the school   and check the Display Attributes box .  Finally press the Create Buffer button .  On your screen you will see a light blue circle with three bright blue dots (the school and two day care centers.  The bottom of your screen will look like this:



There are two day care centers within half a mile of Georgetown Elementary, one with a capacity of 6 children and the other with a capacity of 9.





6)      How to create a Bookmark for the Interactive School District Map:


If you create a bookmark while connected to this website it will not start the next time you try to open it.  If you wish to bookmark this site directly you will need to edit your bookmark after you add it to your favorites.  You can edit your bookmark by Right clicking on it from your Favorites menu. Once you right click select Properties from the bottom of the popup menu, this opens a Properties Window which allows you to edit the URL or web address.  To successfully bookmark this map page you must DELETE the following ‘/viewer.htm‘ from the address as it appears in the URL window. Once /viewer.htm has been deleted press OK at the bottom of the window and the Interactive Map should start without any problems the next time you select the bookmark.





Questions ?



Questions can be directed to Don Berry 302-735-4152.

Email: dberry at