Teachers, it is said, have some of the hardest jobs in the world. The hours are long, and the rewards often intangible. In addition to designing and executing lesson plans, grading homework and coordinating extracurricular activities, teachers are expected to be surrogate parents, offering children personal comfort and protection over the course of a long school day.
In recent years, teachers have also had to contend with a devastating reality: the increasing threat of school shootings.
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