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I didn't understand AP chem at all but he really tried to help and I ended up doing pretty decent in his class. He was a funny guy and a great teacher.
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1 star
5 stars
5 stars
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Duffner was a great teacher, who was cool and understood his material. Students shouldn't blame him for teaching the first AP available to students at Longwood.
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5 stars
5 stars
5 stars
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AP Chem was definately a hard class and Mr. Duffner did help us a lot with it, still wasnt clear and understandable, although that could have been the course.
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1 star
4 stars
2 stars
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Don't confuse the course difficulty with the teacher's personality. He's a REALLY good teacher, and will help you out so long as you try your best.
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1 star
5 stars
5 stars
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AP Chem and Science Research were the worse classes, but Duff is a really sweet guy, lol. He's retiring, so give him a break
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3 stars
3 stars
3 stars





