I'm a Dunottar parent, and have two children there.
Overall, I've been very happy. My children are certainly very happy and engaged there.
I have one academically strong child, who is on track to get top grades across all GCSEs.
I have one academically strong but frankly lazy child, who is doing well. This child is younger child so not at the point of predictions yet, but the school seem to have a measure of him, and do push him.
The strength of the school really though is pastoral. They are very supportive and the children really thrive. The confidence (nice confidence not arrogance) that my children have gained from being there really shows. Co-curricular activities are strong and my children have had a go at everything from robotics to bee keeping to dissection club, as well as the more traditional sports/music etc.
Lockdown learning was full lessons, including co-curriculars from the get set go back in March. I'm really happy with the provision.
It isn't the same as RGS, the results won't be as good as the intake is less selective. But the children are really valued, and everyone is always encouraged to be the best they can possibly be.
It does appear to be getting more and more popular and oversubscribed.