@DolphinOnASkateboard
A few years ago when my DC1 went through this, we did share results (not actual scores) on the Y6 11+ WhatsApp group, if people wanted to, everyone who joined the group did - we separated the 11+ stuff from the usual class chat. What I found was that our Y6 11+ WhatsApp DC processed the results, whatever they were, a lot quicker and painlessly than the other DC.
On the Monday morning, all the Y6 11+ DC knew each other's outcomes said a quick well done or well tried and got on with the day. The DC that weren't part of the group had to keep repeating their results which was quite hard for some DC.
So although I know you are trying to protect the DC, sometimes it's just better to get the info out there - if you want to.