All Apps from my school iPad disappeared

If your apps are hidden, you can swipe left past all your Home Screen pages to get to App Library, there you can also move apps back onto the Home Screen. You may have also hidden your Home Screen pages. Touch and hold the Home Screen until the apps jiggle. Tap the bottom dots to reveal thumbnail images of your Home Screen pages with checkmarks. To show hidden pages, add them.

Find your apps in App Library on iPad - Apple Support

mulembela wrote:

l need help please my school iPad all apps lost

If this is an iPad managed by your school, you should talk to your teacher or whoever is in charge of technology.