It has no dramatic structure or developing storyline, it has no regular characters that appear for more than a couple of minutes per episode, it has no cliffhangers to keep you watching - in fact it's designed to be watched at a rate of two episodes per year, if that, or for teachers to just show a few minutes from each episode if they want too instead of the whole thing.
It's really part of "Look and Read" in name only, because it was a literacy series for primary schools like L&R is. Even the folks at the BBC don't refer to it as part of Look & Read. I've been considering moving it out of the main story sequence on this site, actually, and covering it as an "extra".
But that doesn't mean it's not very good and often extremely funny, by the way - I was still giggling at that first sketch with the girl interviewing an athlete on CBBC yesterday, I find all those TV-script-spelled-wrong sketches absolutely hilarious!