Alex,
This would be a manual process. You can do 1 of 2 things: Just remove that column altogether or Replace it with your own text. Either way you will need to hack a file in the theme: /fordson/templates/teacherdash.mustache
Look to line 205ish where you see:
<div class="col-md-3 activitylinks">
<div class="dashtitle">
<h3><i class="fa fa-check-square-o dashicon"></i>{{{activitylinkstitle}}}</h3>
</div>
<div class="list-group">
{{{courseactivities}}}
</div>
</div>
Removing {{{courseactivities}}} should remove the listing that you want. You can also delete everything between the <h3> tags as that is just the title. You could put text instead and put school or district contact information in that box. For this you will need to use HTML code for bulleted items and/or links etc. Put your new title inbetween the H3 tags and then your text below the <div class="list-group"> area.
You will need to make this change each time you update Fordson.