The iPad, iPad 2, 3, 4, iPad Air, iPad mini and iPad Mini Retina have passed rapid decompression tests conducted by Garwood Laboratories, Inc.  Please see these articles below for further details:  

     New iPad mini with Retina Display Passes Rapid Decompression Testing

and

     Successful Rapid Decompression Tests on New iPad Air

There is also a Decompression Test video available that walks through the EFB hardware qualifications.  It shows the Rapid Decompression test process on a 3rd generation iPad.   

The above articles should provide sufficient proof that these iPads meet most rapid decompression testing requirements.