Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Kim Jung-hyun (actor, born 1990)
Table title:
Television series
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Title </th><th colspan=1 rowspan=1 > Role </th><th colspan=1 rowspan=1 > Network </th><th colspan=1 rowspan=1 > Notes </th><th colspan=1 rowspan=1 > Ref. </th></tr>
<tr> <td colspan=1 rowspan=1 > 2016 </td><td colspan=1 rowspan=1 > Don't Dare to Dream </td><td colspan=1 rowspan=1 > Pyo Chi-yeol </td><td colspan=1 rowspan=1 > SBS </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=4 > 2017 </td><td colspan=1 rowspan=1 > The Rebel </td><td colspan=1 rowspan=1 > Mo Ri </td><td colspan=1 rowspan=2 > MBC </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Binggoo </td><td colspan=1 rowspan=1 > Ko Man-soo </td><td colspan=1 rowspan=1 > Drama Special </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > School 2017 </td><td colspan=1 rowspan=1 > Hyun Tae-woon </td><td class="highlighted"  colspan=1 rowspan=2 > KBS2 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Buzzcut Love </td><td colspan=1 rowspan=1 > Chi Hwan </td><td colspan=1 rowspan=1 > Drama Special </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=2 > 2018 </td><td colspan=1 rowspan=1 > Welcome to Waikiki </td><td colspan=1 rowspan=1 > Kang Dong-gu </td><td colspan=1 rowspan=1 > JTBC </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Time </td><td colspan=1 rowspan=1 > Cheon Su-ho </td><td colspan=1 rowspan=1 > MBC </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
What did Kim Jung-hyun do in KBS2 in 2017?
Answer:
In 2017, Kim Jung-hyun played in KBS2's School 2017.