When we went through the process 2 years ago, some schools asked children to sit banding tests, these were non verbal reasoning papers. My understanding was that this was to ensure a fair intake of children across all abilities. My son had to do this for Kingsdale & Askes, but the other schools on our list didn't use this system - Deptford Green, Forest Hill, Elmgreen and St Thomas the Apostle. Then there was another set of baseline tests for the school he eventually went to, these were done in the Summer term. When it came to putting him in sets according to ability, the school assessed all students at half-term to do this, but his Year 7 targets were apparently based on his Year 6 SATS, all a bit confusing.