BuddyPress.org

Or use something like this:

/**

* Add custom userdata from register.php

*/

function tj_add_to_signup( $usermeta )

{

$usermeta['accept_tos'] = $_POST['accept_tos'];



return $usermeta;

}

add_filter( 'bp_signup_usermeta', 'tj_add_to_signup' );



/**

* Update usermeta with custom registration data

*/

function tj_user_activate_fields( $user )

{

update_usermeta( $user['user_id'], 'accept_tos', $user['meta']['accept_tos'] );



return $user;

}

add_filter( 'bp_core_activate_account', 'tj_user_activate_fields' );



/**

* Perform checks for custom registration data

*/

function tj_check_additional_signup()

{

global $bp;



if( $_POST['accept_tos'] != 'agreed'  )

$bp->signup->errors['accept_tos'] = __( 'Please make sure to read our Terms of Service and then check this box!', 'traveljunkie' );

}

add_action( 'bp_signup_validate', 'tj_check_additional_signup' );



/**

* Add newsletter and TOS to register page

*/

function tj_add_to_registration()

{

?>

<div id="tos" class="register-section">

<?php do_action( 'bp_accept_tos_errors' ) ?>

<label><input type="checkbox" name="accept_tos" id="accept_tos" value="agreed" /> <?php _e( 'Check this box to accept our <a href="/terms-of-service" target="_blank">Terms Of Service</a> (required)', 'traveljunkie' ) ?></label>

</div>

<?php

}

add_action( 'bp_before_registration_submit_buttons', 'tj_add_to_registration' );

You’d have to adjust the links and some other stuff slightly, though. Put this in your (child-)themes functions.php file. I use the above for all kinds of stuff, like newsletter signup. You could add the quiz stuff then with a bit of jQuery.