you can see this in wikipedia :
In the manga, there are no corresponding chapters to episodes 23 to 26.
There is no second season nor news out making one either, for the time being. Some rumors have been spreading that they might be a second season of Gakuen Alice in March/May 2009 but there is a big chance that this anime would not continue since the manga is still in progress. Also the first season last episode is not even in the manga, the creator of this anime made it up so that it can end that way.
Many people still believe that the season two is airing in Japan. If there is info of it airing in Japan or working on it please tell us.
p.s. i didn't write this! it was in wikipedia!
Post in here please