degree list shortcode

/* Degree List
----------------------------------*/
// CPT Slug = 'degree'
// TAX Slug = 'school'

add_shortcode( 'degree_list', 'mbu_degree_list_shortcode' );
function mbu_degree_list_shortcode ( $atts, $content = null ) {
  extract( shortcode_atts( array(
    	'school' => ''
    	),
  $atts, 'degree_list' ) );
 
	ob_start();

	$args = array(
		'post_type'	=> 'degree',
		'posts_per_page' => 100,
		'tax_query' => array(
			array(
				'taxonomy' 	=> 'school',
				'field' 	=> 'slug',
				'terms' 	=> $school
			)
		)
	);

	$degrees = new WP_Query( $args );

	if ( $degrees->have_posts() ) {
		while ( $degrees->have_posts() ) {
			$degrees->the_post(); ?>

				<a href="<?php the_permalink(); ?>"><h5><?php the_title(); ?></a></h5>

				<?php
			}
		}

		wp_reset_postdata();

		echo '<div style="clear:both;"></div>';


	$myvariable = ob_get_clean();
	return $myvariable;

			echo '<div style="clear:both;"></div>'; 
}