im guessing you mean the phsycometric test? if so when i had to retake it i went on the bbc bitesize ks3 site
just google bbc bitesize ks3
so the maths lessons on there
and do the science electrical lessons on there
it helped me loads and i passed after
although i will say if you find ks3 way to easy move up to gcse level, but i doubt you will need to.
soem of the questions on the bitesize site you wont get in the test but it still does nock up your maths and bunk up the score
when it comes to english if it was english you got a low score on maybe google some practice english tests but i dont think theres many places you can actualy learn the type of stuff you get in the test
ahh that was what i was low on too yeah i just literaly did the ks3 maths lessons about 3 times over and was fine in the end. aslong as you remember how to work things out then its much better when you take the test. im guesssing ou have to wait another year now to retake it?