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Ohio Data Primer

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Module 2: Tutorial—Where have we been? Where do we want to be?

We begin by building a floating-bar graph to compare a school's grade-for-grade reading results. The data to use in these charts may be found in the Enhanced Class Score Reports, the Interactive Local Report Card, or Ohio's Success Portal.

To make a floating-bar graph, we first draw lines for vertical and horizontal axes. The horizontal axis intersects the vertical axis at its center, not at its bottom. We add two scales to the vertical axis, each beginning at the horizontal axis. We set the intersection point with the horizontal axis to 0 percent, the top of the vertical axis to 100 percent, and the bottom of the vertical axis to 100 percent as well. Click here to see the example.

The area above the horizontal axis is for the percentage of students scoring at proficiency or above, and the area below is for the percentage scoring below proficiency. We stack the Proficient, Accelerated, and Advanced performance levels on the horizontal axis. Note how the top of the stack lines up on the vertical axis to indicate the percentage of students at or above proficiency. We hang the Basic and Limited/Below Basic levels from the horizontal axis. Again, note how the bottom of the bar lines up on the vertical axis to indicate the percentage of students who are not yet proficient.

We repeat this process after locating the data for other grades. The graph now looks like this.

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