This ain’t about you. It’s safer to have physical barriers to slow people down for the school and the community. Some people might be okay getting a fine whilst speeding through a camera monitored area.
A few speed bumps won’t affect the outcome of an ambulance or fire truck. It is not safe for them or the community for them to be going much more than the speed limit. If you really, really think it’s an issue, put an emergency vehicle passing lane of some sort like you have for people to keep going while a car tries to turn left