I did check nearly all good existing php based e-learning management systems / student management / campus management systems and as most forum say moodle is best solution for e-learning or such systems,i was not pleased with the same, but i did find out LOGI CAMPUS http://logicampus.sourceforge.net/ OpenSis http://www.opensis.com/ ATutor http://www.atutor.ca E-Front Learning http://www.efrontlearning.net i found all of them interesting bur if there is really something much better than these and have great implementations around.Please do recommend.
When I was in college we were using Moodle. It's great, very customizable and it's free. Take a look at these: php.opensourcecms.com/scripts/show.php?catid=6&category=e-Learning