In our school the extra stuff counts, otherwise there are 100 TA level 2's or level 1's so what gives one person the edge over another?
So like BackForGood says, piano/musical instruments, SEN, speech therapy or counselling qualifications. My friend said in her interview that she could go on all the residential school trips
she has done as well.
Our school is outstanding on Ofsted, I merely volunteer but to do that I had to sit a course that covered everything from school policy to first aid to whose who in the school and disclosure and how to deal with it, I then had to sit an exam, and once I passed that then a CRB check, only then will they let you through the doors 
We have a high proportion of teachers who play musical instruments such as piano, violin, cello, flute, drums, we also have a SENCO teacher and a trained counsellor who deals with children with emotional barriers to learning so parents splitting up, a death in the family, not making friends etc all things that would affect a child's ability to concentrate.
We have a speech therapist too. All these give those teachers and TAs something extra on their CV.