My DS has just taken CATS tests at his school. He has just started in year 7. Whilst chatting to one of his friends who has gone to the local grammar school he mentioned he had done these. The friend said he has not taken CATS, do Grammar schools not take them? (They are similar to the SATS but I think the results are used for the childs education rather than like SATS which the school use to make themselves look good!!)