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 rpstart="494" />
  </query-continue>
  <query>
    <reviewedpages>
      <p pageid="443" ns="0" title="Collaborative learning" revid="1206" stable_revid="1206" flagged_level="0" flagged_level_text="stable" />
      <p pageid="477" ns="0" title="Junior Reserve Officers Training Corps" revid="1297" stable_revid="1297" flagged_level="0" flagged_level_text="stable" />
      <p pageid="478" ns="0" title="Link Crew" revid="1298" stable_revid="1298" flagged_level="0" flagged_level_text="stable" />
      <p pageid="479" ns="0" title="Student council" revid="1945" stable_revid="1945" flagged_level="0" flagged_level_text="stable" />
      <p pageid="481" ns="0" title="Parent-Teacher Association" revid="1303" stable_revid="1303" flagged_level="0" flagged_level_text="stable" />
      <p pageid="482" ns="0" title="Parent-Teacher Organization" revid="1317" stable_revid="1317" flagged_level="0" flagged_level_text="stable" />
      <p pageid="483" ns="0" title="Parent Teacher Organization" revid="1318" stable_revid="1318" flagged_level="0" flagged_level_text="stable" />
      <p pageid="484" ns="0" title="Positive behavior support" revid="1324" stable_revid="1324" flagged_level="0" flagged_level_text="stable" />
      <p pageid="492" ns="0" title="IB Diploma Program" revid="1350" stable_revid="1350" flagged_level="0" flagged_level_text="stable" />
      <p pageid="493" ns="0" title="IB Middle Years Program" revid="1348" stable_revid="1348" flagged_level="0" flagged_level_text="stable" />
    </reviewedpages>
  </query>
</api>