If you write a question or answer using ReStructuredText on Courselets, your easiest option for displaying a table is just to insert raw HTML for the table. You can do this using ReStructuredText's raw directive, for example:
.. raw:: html
<table class="table table-bordered"><thead><tr><th>Person</th><th>Favorite Book</th></tr></thead>
<tbody>
<tr><td>Bob</td><td>Catch-22</td></tr>
<tr><td>Jane</td><td>Catcher in the Rye</td></tr>
<tr><td>Joe</td><td>Catch Me If You Can</td></tr>
</tbody></table>
Which renders in Courselets as follows: