Im 10/25 lessons so 0.4. Not found many schools that will do less than that unless the department is in a bad way. I argued for an excellent SEN-admin and got it so we both win. Couldnt be without her and she organises the department. I was also lucky as get most of my teaching out of the way on 1 day which just meant I was teaching and not available. Does help so people know when Im about and when not.