Pumping at School

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Hello! I was wondering if mom's out there who are teachers could give me info on pumping at school. Will pumping twice (lunch/plan) be enough to keep up my supply? Did you just pump in your classroom? Where did you keep your pumped milk? Or clean your parts? I really want to try to keep breastfeeding but I don't know how to do it at work at all honestly. I'm worried about trying to find time to pump and losing my supply by not pumping enough at school. Plus the factor of where to pump at. My supply is great right now and I have a lot frozen, but that will only last so long!!