Average 4.2 based on 10 teacher ratings
O'Brien is a History teacher at Crystal Lake Central High School located in Crystal Lake, Illinois and part of Chsd 155 School District. O'Brien's 10 teacher ratings contributes to Crystal Lake Central High School's ranking of 219 in Illinois. Additionally, the average teacher rating at Crystal Lake Central High School is 4.36 stars.
4
Easiness
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Clarity
5
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4
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3
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3
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DOB is definitely one of those teachers you need to have at least once in HS. I had him twice and the classes were boring but he was hilarious! His tests are very text-specific tho, so read the book!

5
Easiness
5
Helpfulness
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OB is the best teacher OF ALL TIMES!!!!!!!!!!

3
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Class is ok if you read the book...otherwise...=(

2
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1
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Clarity

I didn't learn anything, prolly cuz I slept in his class.

3
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5
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Clarity

I love this teacher. I've always hated history and now I LOVE IT. He really makes you understand things if you want to if not you get the grade deserved.

2
Easiness
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Mr. O'brien was hard. But honestly, i learned A LOT from his class. We had to teach ourselves, but when you got that test back, YOU earned that grade.

3
Easiness
5
Helpfulness
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Clarity

I had Mr. O'Brien for history over 10 years ago. I'm glad to see he is still teaching because I learned so much and can remember his words of wisdom today!

5
Easiness
5
Helpfulness
5
Clarity

He is an excellent teacher who obviously loves his job and relates well to students. He keeps history interesting.

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Learn more about Crystal Lake Central High School

5-star
76%
4-star
8%
3-star
6%
2-star
3%
1-star
5%
Based on 596 Ratings
Crystal Lake Central High School is a public high school located in Crystal Lake, Illinois and part of Chsd 155 School District. Crystal Lake Central High School is ranked 219 in Illinois. Learn More