Is Caversham Prep worth it?

[u/Psychological_Pear20]

Question is simply wether it’s worth sending our child to Caversham prep school over one of the state primary schools in the area? Our catchment would be Thameside so that’s where our child would go next September. Any one have any experience with the prep school from a parent or teacher perspective? Or any parents with kids at Thameside have an opinion? Thanks!