<td>2015</td>
      <td>Current ELL</td>
      <td>330.679260</td>
      <td>252.888885</td>
      <td>77.790375</td>
    </tr>
  </tbody>
</table>
</div></div></div>
</div>
</section>
<section id="concatenate-dataframes-long-data">
<h2>Concatenate DataFrames: long data<a class="headerlink" href="#concatenate-dataframes-long-data" title="Permalink to this headline">#</a></h2>
<p>If we have two DataFrames with the same columns (like our math and ela results) we can concatenate the data from one df onto the o