PHP echo displaying in the wrong place

I have a php function that echos an html table td 5 times. I'm calling the function from within the tr tags of a table. But it displays above the opening tr tag in the web page source code, and it's causing the table to display incorrectly.

The function is getStudRateTRs(). Here's my html table, along with the php:

<?php 

function getStudRateTRs($n) {
	foreach ($n as $key => $value) {
		echo "
    <td class='right'>test</td>";
	}
}
?>

<table border="1" cellpadding="4" cellspacing="0">
  <tr>
    <td class="h-center">&nbsp;</td><?php 
foreach ($term as $value) { echo "
    <td class='h-center'>" . $value . "</td>";
} ?>

  </tr>
  <tr>
    <td class="h-right-caps">Student</td>
    <td colspan="<?php echo count($term); ?>" class="right"></td>
  </tr><?php 
foreach ($rangeStud as $key => $value) {
	echo "
  <tr>
    <td class='h-right'>" . $value . "</td>
	" . getStudRateTRs($term) . "
  </tr>";
}
?>

</table>

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The resulting web page source code, in Firefox, looks like this:

<table border="1" cellpadding="4" cellspacing="0">
  <tr>
    <td class="h-center">&nbsp;</td>
    <td class='h-center'>Annual</td>
    <td class='h-center'>Semi-Annual Session 1</td>
    <td class='h-center'>Spring/Summer</td>
    <td class='h-center'>Semi-Annual Session 2</td>
    <td class='h-center'>Summer</td>
  </tr>
  <tr>
    <td class="h-right-caps">Student</td>
    <td colspan="5" class="right"></td>
  </tr>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
  <tr>
    <td class='h-right'>00-24</td>
	
  </tr>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
  <tr>
    <td class='h-right'>25-30</td>
	
  </tr>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
  <tr>
    <td class='h-right'>31-40</td>
	
  </tr>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
  <tr>
    <td class='h-right'>41-99</td>
	
  </tr>
</table>

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But I want it to look like this:

<table border="1" cellpadding="4" cellspacing="0">
  <tr>
    <td class="h-center">&nbsp;</td>
    <td class='h-center'>Annual</td>
    <td class='h-center'>Semi-Annual Session 1</td>
    <td class='h-center'>Spring/Summer</td>
    <td class='h-center'>Semi-Annual Session 2</td>
    <td class='h-center'>Summer</td>
  </tr>
  <tr>
    <td class="h-right-caps">Student</td>
    <td colspan="5" class="right"></td>
  </tr>
  <tr>
    <td class='h-right'>00-24</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
  </tr>

    <td class='right'>test</td>
  <tr>
    <td class='h-right'>25-30</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
  </tr>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
  <tr>
    <td class='h-right'>31-40</td>
  </tr>
  <tr>
    <td class='h-right'>41-99</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
    <td class='right'>test</td>
  </tr>
</table>

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The td lines generated by getStudRateTRs() are showing up before the opening tr, even though I've placed the function within the tr tags. What am I doing wrong?

Thanks!