The Secret Service must immediately investigate this teacher.
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Start with that teacher, yes. But, any and all investigations into criminal behavior by teachers must also include the school site admin, the district admin and the teachers’ union reps in that area too.
The behavior of these teachers is not an unknown or surprise to those who either provide them jobs or those who lawfare in support of them keeping their jobs when they behave badly.
And don't forget the body cavity searches with a fully-charged cattle prod.