Because of good experiences with the software for the classes 1 and 2, I have now bought Class 3. Even a teacher "aims" once next, overlooking in correcting an error once. And software is only made by human hands. It is interesting how a child reacts when it is not "locked-" gets a proper solution. I have found that the children with the little netbook like the software itself "snatch" and even "play" on a long drive with the software. I'm sure it remains somewhat hanging and recommend further software. By the way, they learn to use the computer.