My PPA time clashes with a whole school activity afternoon and I was asked if I wanted to take part in the activity or have my PPA time. I replied that I would like to be part of the activity for the children (and parents would be present too) but would like my PPA time rescheduled. Was later told that there was enough staff for the activity and I would have to do my PPA instead. I feel that this may reflect badly on me not appearing to support my class while parents are on site but do I have any rights? I could miss my PPA time but with small children and reports to complete my time is precious AND I have already missed PPA times before now due to staffing issues and have been accommodating to the school but this makes me feel like I'm not valued at all! Any suggestions please?