Generally they won't test for dyslexia until they are at least 7 as before then it fits within 'normal for age', but having the 'official diagnosis' as such doesn't change the help that is worth putting in place. And even if they are not, the strategies work well anyway.
Lots of people like Toe-by-Toe which does repetitive spelling testing. We found that DD could do those fine when she was working on them specifically but as soon as she was back in class it rather went out of the window, but lots of people really like it.
My DD had a dyslexic teacher in Y2 who recognised the signs and the EP saw her at the beginning of Y3. Her major issue is spelling and while she can read quite well, it's obviously a huge chore for her and she gets no real enjoyment out of it (we have a house full of books and DH and I are always reading, so I find it really sad that she will do everything to avoid it.)
Just to add to the fun, she has hypermobile finger joints so writing is painful both physically and mentally.
The EP recommended at the beginning of Y6 that she learn to touch type and move asap to using a laptop as her normal way of working. I wish we had done this years earlier. I got a copy of English Type Junior which is a fun game-based touch typing programme and she's started Y7 with a laptop for everything bar Maths and PE.
Still can't spell, but laptop has a read-back function and spell check (although even spell check is defeated by DD's phonetic interpretation on a regular basis). But... she now writes huge quantities whereas before we struggled to get a couple of sentences.
Audio books are also great - make sure to get the unabridged versions and they can follow along in an actual book. Also films... if DD really likes a film then I can sometimes interest her in the book of the same title.
Worth trying kindle and seeing if altering font and background colours helps at all.
Other things that are a huge help:
- sit at the front of the class
- ensure they have understood concepts properly
- handouts rather than being expected to copy things down (and in a dyslexia friendly font and pt size - Arial 14 or similar)
- giving an overview of a topic before starting on the detail rather than working A to Z.
- having a cheat sheet of common words laminated and on the desk all the time to refer to.
Also, when you get the testing done, if your DD qualifies for extra time for exams, make sure she gets it for class tests as well. My DD qualifies for 25% extra, but never got it during class tests... hence why she never moved up a level on times tables... 48 or 49/50 every week, but she never managed to finish question 50.