I have been UPS1 for a number of years and have been happy with that as I have been on maternity leave during that time and only working a 0.4 contract.
I have however been taking on more leadership responsibilities (joint PSHCE lead) and am increasing my hours in September. Nobody has ever spoken to me about the prospect of progression on UPS and I wondered if there was a standard way of progressing or if it varied from school to school.