I'm sorry to hear people's experiences with University of Cambridge Primary School.
We removed our son from the school before covid. He didn't have any very bad experiences as such, but I just was not comfortable with the closed nature of the school (children not allowed to talk about what happens in school with their parents, parents not encouraged to talk with teachers, parents kept away, secretive atmosphere), the Twitter happy, surface image headteacher (agree with another poster about him being a narcissist), and the stories my son was telling me about his friends being hit/kicked/punched out of view of teachers, as well as children doing inappropriate things (poo'ing in the playground 'woods' as an example) with little consequence, and the poor academic progress of many of the children (with many seeking tutors even from yr 1 in order to get them up to parr with kids from other schools (if UCPS get good SATS results it will be because most of the kids have tutors, not because the teaching is any good))
This was the first primary school we had any experience of, so I didn't know if my unease with the school was about me not knowing what primary school is like and having unrealistic expectations, or if it was the school actually being very poor as I suspected. So decision to move my DS was very hard. Ultimately we decided to move DS to a different school, and as soon as we did, we realised how good schools can be and how terribly.poor UCPS was. His new school was welcoming, a culture of openness was encouraged, there were bullying and SEN policies to ensure all children were well looked after and safe, behaviour was well managed, the head was hands on and lovely (no tweeting, just a lot of hard work), the teachers wanted to talk and share the work the children were doing, and my son seemed so happy! and all the children seemed to be thriving. Academically my son came on leaps and bounds and I noticed the volume of work being completed (by looking at books coming home) was double what my child produced at UCPS.
I have been reflecting back a lot over lockdown, on our UCPS experience. We nearly didn't move our son out and kept thinking it would get better and maybe it's not so bad etc... I'm so glad we moved him. My only regret is not doing so sooner. He's had help to catch up his writing (was never taught at UCPS it seems) and is now doing great! He reflects on his 'naughty' classmates and 'shouty' teachers from UCPS from time to time and wonders how they are doing.
I am sad UCPS didn't work out for my son as I had high hopes for the school, and loved the idea of the school which is portrayed on twitter and on the website. Sadly though the school does not promote 'compassionate citizens', tolerance and respect as it claims. It needs to work on behaviour management and improving academic standards, ensuring a happy place where children can genuinely strive (not where they are bribed to be good when Ofsted come round, which is what happened).