The problem may be if the teacher does keep class records regarding attendence. When I was in HS, some teachers were Nazi when it came to attendence and others did not record an absence, even it the person was absent from school.
Besides, where I went to school, the Home Room teacher was required to take attendence and submit it to the office who would then send a sheet to all teachers as to what students were not in school. The teachers used that to determine if someone was possibly skipping (I say possibly because the office also kept a log of which students left early with an excuse so they office can check). As far as excused absences, we had a part time attendence officer that took care of that.
I think most states have requirements that all schools must record attendence. After all, it is against the law to be truant and they have to prove it somehow. I think even homeschoolers are required to prove attendence in most states.
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Louis J Bouchard
Rochester Minnesota
"Only when all those who surround you are different, do you truly belong."
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Fred Tate Little Man Tate