You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information.
<?xml version="1.0"?>
<api>
  <query-continue>
    <reviewedpages grpstart="79" />
  </query-continue>
  <query>
    <pages>
      <page pageid="65" ns="0" title="Falcon High School" contentmodel="wikitext" pagelanguage="en" touched="2015-01-19T07:06:30Z" lastrevid="2398" counter="212555" length="3863" />
      <page pageid="75" ns="0" title="Falcon Middle School" contentmodel="wikitext" pagelanguage="en" touched="2015-01-19T07:06:33Z" lastrevid="1886" counter="72146" length="3388" />
      <page pageid="76" ns="0" title="Falcon Elementary School of Technology" contentmodel="wikitext" pagelanguage="en" touched="2015-01-19T00:03:43Z" lastrevid="2370" counter="84690" length="3938" />
      <page pageid="77" ns="0" title="School District 49" contentmodel="wikitext" pagelanguage="en" touched="2015-01-19T07:08:18Z" lastrevid="3047" counter="46851" length="5806" />
    </pages>
  </query>
</api>