Depending on the time travel from home to infant care. For me, it takes abt 5-10 mins to reach the school. So, I didnt even have the pumped milk in cooler bag when leaving the house.
I normally pumped out my morning fresh milk and bring it to school daily. If possible give slightly more so that the teachers can have it on standby in case baby needs more or spilled milk... I also left some frozen ones to standby. As my freezer space is running out, so I had asked the teachers to start giving 1 packet of frozen milk and the rest of the feeds use fresh ones on a daily basis. So far, this arrangement works well.