why routing not work

hi there.
current theme is school.

PHP Code:

/*
 * --------------------------------------------------------------------
 * Route Definitions
 * --------------------------------------------------------------------
 */

// We get a performance increase by specifying the default
// route since we don't have to scan directories.
$routes->get('/', 'Home::index');
$routes->get('school', 'School::index'); 


(Picture1: I can't paste a image.)
`http://localhost:8080/school/`
not works.

but, for example ... change to `schoolx`

PHP Code:

/*
 * --------------------------------------------------------------------
 * Route Definitions
 * --------------------------------------------------------------------
 */

// We get a performance increase by specifying the default
// route since we don't have to scan directories.
$routes->get('/', 'Home::index');
$routes->get('schoolx', 'School::index'); 


(Picture2: I can't paste a image.)
`http://localhost:8080/schoolx/`
it works.

why routing not work??

---

infomation:
controller name is `School.php`