Shift from Classic Google Sites to Current Google Sites.
People who are still using the timeless version of Google Sites can shift to the current version of Google Sites by following the instructions in this video. It needs to be kept in mind that not all features discovered in the traditional variation of Google Sites are available in the present variation of Google Sites..
Develop a Website with Google Sites.
The present variation of Google Sites is much easier to use and more aesthetically pleasing than the timeless version. And there are some helpful features in the existing variation that were not offered in the classic version.

For nearly five years now Google has actually been stating that the old, “traditional” variation of Google Sites would be closing “quickly.” It appears that they actually mean it this time. In an email to Google Workspaces domain administrators and in
this article, Google has revealed that on May 15th the capability to create new websites utilizing the old variation of Google Sites will be gotten rid of. On December 1st modifying of websites made with the timeless variation of Google Sites will be disabled. And on January 1, 2022 all sites made with the classic version of Google Sites will be offline..

3 Quick Ideas for Using Google Sites in Your Classroom.