Just started a new job and my DS just started reception in the same week. School told us their wraparound care was super flexible but it turns out there are no available spaces (some days). We have no family nor friends that can help. There will be times when neither DH nor I can make it to school at a normal time (but can get there earlier). Is it acceptable to ask school to let our DS leave early for those days? Wouldn't be very often and would get him around 230.