Drupal 7: (UNTESTED) Add an extra pane to Ubercart's checkout form / review.

d7_uc_extra_checkout_pane.php

<?php
	function yourmodule_custom_form($form, &$form_state, $term) {
         /* Note: rather than passing a $term var, you could use arg(2) from the url */
		drupal_set_title('Your Label: ' . ucwords($term));
		// or
		drupal_set_title('Your Label: ' . str_replace('%20',' ', arg(2)));

		/* Make life easier: */
		$school = ucwords($term);

		/*
		* Amongst your other form items, create an
		* unchangeable pre-populated text field.
		*/
		$form['school'] = array(	// Sample "School" field.
			'#type' => 'textfield',
			'#title' => 'school', 	// should probably use t() but you don't have to.
			'#disabled' => TRUE, 	// Now it's a form item that can't be changed.
			'#required' => TRUE,
			'#value' => $school,
		)

		return $form;
	}
	/*
	*	Add a whole pane to the checkout form,
	*	which should make things look pretty for your
	*	order review page too.
	*
	*	Implements hook_checkout_pane()
	*
	*/
	function yourmodule_uc_checkout_pane() {
		$panes['school_pane'] = array(
			'callback' => 'yourmodule_checkout_pane_school_pane', // Or whatever you wanna call it.
			'title' => t('School'),
			'desc' => t('Go Nixa Eagles! Branson Pirates suck!'), // Might put some useful non-specific school related stuf here.
			'weight' => 42, // Douglas Adams.
			'process' => FALSE, // I don't know if this pane needs to be processed
			'collapsible' => FALSE,
		);

		return $panes;
	}
	/*
	* Callback for yourmodule_uc_checkout_pane() 
	*/
	function yourmodule_checkout_pane_school_pane($op, $order, $form, &$form_state) {
		$school = $form_state['values']['school'];
		switch($op) {
			case 'view':
				$contents = 'Your school is so great!';
				$contents .= '<address>'. $school .'<br />';
				$contents .= '555 Fake Address<br />Faketown, MO. 65714</address>';
			case 'review'
				$contents = 'Yo momma';

		}

		return $contents;
	}

?>