Not that great
The story itself might have been good (I only did the demo), but the game had several somewhat annoying problems:
1 - the hidden object puzzles relied on slightly out of perspective and odd cut-and-paste pictures.
2 - objects to be found were sometimes described with non-standard names
3 - some objects on the list were named incorrectly when there was an actual object with the correct name in the picture, for example, the "flute" in the classroom was along a table leg, but the game did not accept that, it wanted a recorder (which is not the same thing).
If you do try it, make sure to go to the options menu and turn the music off during the audio hidden object sections. It would have been better if it was turned off automatically during that round.