my daughter is now studying K2 at a non-profit kindergarten but she studied in York for K1. I think york is a commercial kinder but at the other time it is a really good kinder. The academic level is higher than other non-profit kinder. Let's say my daughter K2 level at non-profit is equal to K1 2nd trimester level at york.
If primary school is not a concern, i will not change kinder for my daughter.