Hi Vickyconfused, I can absolutely understand you. I bought this for my DD last year. These are basically topics and you have to improve your score on them. Except for Mock Exams, they are like a couple of sets of each topic, and work the same way. It doesn't take one year to do all these, just need loads of practice and...experience, I'd say.
My DD basically did all of them in half a year(we booked the one year Bond Online) and was improving her ratings on all of them in the second six months. The good average is probably around 80-90%, of course, everything depends on the school your DD's going for.
Nevertheless good luck!