Ghost training was officially taken out of the game on a server side patch on Oct. 15th last year. CCP have claimed that it was an unintentional feature, but they took years to actually do something about it, and fix it.
And to be honest, I am starting to miss it. It was always nice to be able to let a second character (or 3rd of 4th if you’re into that sort of thing), train a long skill (like training for a hulk, battleship V, commandships that sort of thing), and be able to come back to him/her and finding the character more skilled then when you left them.
