function plt_hide_wpschoolpress_menus() {
//Hide "WPSchoolPress".
remove_menu_page('wpschoolpress');
//Hide "WPSchoolPress → WPSchoolPress".
remove_submenu_page('wpschoolpress', 'wpschoolpress');
//Hide "WPSchoolPress → Dashboard".
remove_submenu_page('wpschoolpress', 'sch-dashboard');
//Hide "WPSchoolPress → Messages".
remove_submenu_page('wpschoolpress', 'sch-messages');
//Hide "WPSchoolPress → Students".
remove_submenu_page('wpschoolpress', 'sch-student');
//Hide "WPSchoolPress → Teachers".
remove_submenu_page('wpschoolpress', 'sch-teacher');
//Hide "WPSchoolPress → Parents".
remove_submenu_page('wpschoolpress', 'sch-parent');
//Hide "WPSchoolPress → Classes".
remove_submenu_page('wpschoolpress', 'sch-class');
//Hide "WPSchoolPress → Attendance".
remove_submenu_page('wpschoolpress', 'sch-attendance');
//Hide "WPSchoolPress → Subjects".
remove_submenu_page('wpschoolpress', 'sch-subject');
//Hide "WPSchoolPress → Exams".
remove_submenu_page('wpschoolpress', 'sch-exams');
//Hide "WPSchoolPress → Marks".
remove_submenu_page('wpschoolpress', 'sch-marks');
//Hide "WPSchoolPress → Events".
remove_submenu_page('wpschoolpress', 'sch-events');
//Hide "WPSchoolPress → Time Table".
remove_submenu_page('wpschoolpress', 'sch-timetable');
//Hide "WPSchoolPress → Import History".
remove_submenu_page('wpschoolpress', 'sch-importhistory');
//Hide "WPSchoolPress → Notify".
remove_submenu_page('wpschoolpress', 'sch-notify');
//Hide "WPSchoolPress → Transport".
remove_submenu_page('wpschoolpress', 'sch-transport');
//Hide "WPSchoolPress → Teacher Attendance".
remove_submenu_page('wpschoolpress', 'sch-teacherattendance');
//Hide "WPSchoolPress → General Settings".
remove_submenu_page('wpschoolpress', 'sch-settings');
//Hide "WPSchoolPress → Subject Mark Fields".
remove_submenu_page('wpschoolpress', 'sch-settings&sc=subField');
//Hide "WPSchoolPress → Working Hours".
remove_submenu_page('wpschoolpress', 'sch-settings&sc=WrkHours');
//Hide "WPSchoolPress → Change Password".
remove_submenu_page('wpschoolpress', 'sch-changepassword');
//Hide "WPSchoolPress → Leave Calendar".
remove_submenu_page('wpschoolpress', 'sch-leavecalendar');
//Hide "WPSchoolPress → Edit Profile".
remove_submenu_page('wpschoolpress', 'sch-editprofile');
//Hide "WPSchoolPress → History".
remove_submenu_page('wpschoolpress', 'sch-history');
//Hide "WPSchoolPress → Addons".
remove_submenu_page('wpschoolpress', 'addons');
}
add_action('admin_menu', 'plt_hide_wpschoolpress_menus', 11);