advise pls! schools in germany & dubai (quality) (Dubai)

We are searching for a school in Dubai.
Currently two of our kids (11Y) are visiting a German school in Germany and we appreciate the quality of education.

I have heard that Dubai’s private schools are mostly not comparable with German education quality, so that`s why I`m in doubt, if it will be a good decision to change school.

Does anybody have experience with schools at Germany AND the American/British/German schools at Dubai and can personally compare by experience?

Do we have to await any kind of "quality gap" in case we change school?

May it seem to be a better option for our kids primal finishing school in Germany and after that relocate to Dubai? What would you suggest?

Thanks in advance!
best regards