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The Schools Chartmaker generates charts that describe the revenue
requirements for broadband deployment to public schools, under assumptions
selected by the viewer. The costing data is based on a software model,
called the New Technology Deployment Model: Broadband with Associated
Depreciation and Overheads.
The charts show two types of data:
Comparison of network investment to school investment and to school annual
software and internet expenses; and
Incremental investment per student per year.
Clicking on the button labeled "Instructions" located on the upper
right-hand edge brings you to these instructions.
Clicking on the button labeled "Legend" located on the upper right-hand edge
brings you to the Legend, which explains the underlying assumptions used to
generate the charts and provides definitions of terms used on the
Each of the three panels has a numeral indicating the order for making your
selections. Selections made in panel "1" on the right, determine the
selections available on panel "2" and on panel "3". Selections made in panel
"2", determine the selections available on panel "3".
What is the investment?
The first step is to set the lever on panel "1" to either "by Student" or
"by Network/Computer". Clicking on the red knob toggles the lever between
the two choices. This choice affects the selections available on panel "2".
The instructions below are different for the "by Student" and the "by
Network/Computer" settings. The default is "by Student".
How many computers per classroom? by Student?
There is a small slider in the center panel ("2"), which can be set by
either clicking on the slider, or by clicking on either "Compare by computer
density" or "Compare by years". The selected text will turn green.
Compare by computer density
If the slider is set to "Compare by computer density", three buttons will
appear above the small slider. The buttons refer to three scenarios:
"Teacher-Only", "Team-of-Students", and "Universal". You may select one,
two, or all three of these scenarios by clicking on the appropriate button(s).
When a button is clicked, the arrow will become green. The default is
"Compare by computer density" with all three buttons selected.
Compare by years
If the slider is set to "Compare by years", then a larger slider will appear
above the smaller slider. You can only choose one of the three scenarios. To
select a scenario, click on the large slider, which will toggle among the
three choices. The default is "Team-of-Students". Because "Compare by years"
gives a comparison between "5 yrs" and "20 yrs", there is no need to set
How many computers per classroom? by Network/Computer?
There is a large slider in the center panel ("2"), which allows you choose
among three scenarios: "Teacher-Only", "Team-of-Students", and "Universal".
To select a scenario, click on the large slider, which will toggle among the
three choices. The default is "Team-of-Students". The default is
How fast is fiber deployed?
Select a five-year or a twenty-year deployment of broadband to the schools
by clicking on either the appropriate level on the test tube, or on the
appropriate text. The liquid will rise or fall to the correct height. The
default is "5 yrs".
VIEW CURRENT CHART
Click on the button on the base of the chartmaker to display the chart based
on the current selections. To return to the chartmaker from the chart, click
on the "return to chartmaker" button in the upper left-hand corner. This
will return you with the same settings as the current chart.
Go to broadband chartmaker
Click on this button to go to the "Broadband Chartmaker".
Go to schools paper
Click on this button to go to the background paper for the charts generated
by this model. The paper,
Schools in Cyberspace: The Cost of Providing
Broadband Services to Public Schools, provides a detailed description of the
model and its assumptions and caveats.
Go to home page
Click on this button to return to the home page.