Late Loading Issues With jQuery Toggle

I know this is more a jQuery issue than a WordPress issue, but no one in the jquery forums got back to me. At https://development.northwestdharma.org/group-directory/ you will see the first member groups’s content display without the closed jquery toggle for about a second, and then all the member groups content appear a second later and close the toggles as I and my client want them to be. What can I do to make the toggle be closed BEFORE the content loads. I know one solution is whether you put the script in the head or at the end of the html, but I’m not getting different results when I move the scripts (I may be not moving them correctly). My jQuery script call is in the head and this is my code which appears in the head as well:

//Toggle results
jQuery(function($) {
	$( '.toggle-next + *' ).hide();
	$( '.toggle-next' ).click( function() {
		$( this ).toggleClass( 'on' ).next().slideToggle( 'slow' );
		return false;
	} );
});