Yes you can, but
There is a reason why 10% of kids at that school only get level 5, so look carefully at that and the myriad of reasons that are causing that. Your not in a bubble and the language being used everyday byDD's peers has to be fought against. My DD's come home regularly and ask is Dutty (slang for dirty a real word) or chimbley a correct way of say Chimney.
Whether you think I am a snob for raising that or not, I know of no bond tests or CEM tests that would look for antonyms or synonyms of these slang words, but they are the sort of stuff that DD is having to sift through every day. So teach them to aspire to correct English not the language of the street and love reading regardless of what peers want to do.
Not surprisingly DD gets called all sorts, because of a steadfast refusal to partake. Part of the journey though innit!
I would look now for a tutor especially for NVR.
Reading and vocab are key to success as is speed.
I personally liked bond + schofield and sims.
I would strongly recommend you do a bond placement test as soon as possible
Guard ferociously against parents and the kids who are only interested in a race to the bottom of the pile. They are out there.
Take great great care with any tutors, many are of them are mad, a few are brilliant