What is a high palate?

Arch in mouth roof: Imagine the roof of your mouth as an arch, higher in the middle than at the edges. A high palate arches up more than a lower palate allowing for more room to house your resting tongue.

Arch: The bone structure is more of a triangle shaped than curved -is normal for some not to worry.

Probably nothing.: It generally has no impact on speech or swallowing. It is a non-issue that some people make a big deal about for no good reason.

What do you want: Is there a reason to do something? If not then there is no reason or need to change it. Need a little more information.