You should use get_user_meta
instead of get_the_author_meta()
. because get_the_author_meta()
has Valid values for the $field parameter include: get_the_author_meta
you can take reference from below code.
$school_id = get_user_meta( $current_user->ID, 'school-id',true);
if ( !empty($school_id) ) { ?>
<p class="school-id">
<p>
<?php echo $school_id; # what you want to do with school id ?>
</p>
</p>
<?php }