Average 4.7 based on 133 teacher ratings
Allen Greenstein is a retired Social Studies teacher at Brooklyn Technical High School located in Brooklyn, New York and part of 13. Allen Greenstein's 133 teacher ratings contributes to Brooklyn Technical High School's ranking of 1,048 in New York. Additionally, the average teacher rating at Brooklyn Technical High School is 4.08 stars.
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Recommended
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I was just looking up Mr. Greenstein when I saw this rating site. I was in his global history class in 1982. To this day, I remember things that he said and taught me. I went to a few reunions and was pleased to see him. I was good at coloring in those maps he gave out ( there were no color copiers then), and i was amazed that he pulled them out to show me during my ten and twenty year reunions. What an extraordinary teacher and person. Thank You. (Mehran '84)

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Thanks! great teacher. Sort of like boot-camp for HS and College. I hated him then, but now I see he was the only teacher who actually cared about his students my whole time at Tech.

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This was honestly one of the best teachers i have had in my entire school experience. I learned more in his class than any other class.. things that i have retained and will use throughout life.

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The best kind of teacher: challenging, fair, loved the job and the kids. I pity all the people who were disstaisfied with his class, because they really missed out on learning from someone amazing.

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I was completely and udderly disgusted by day 4 of his class, I do agree he is a good teacher but he insulted me irrelevantly in class so no I do not like him.

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Best Global teacher I have ever had. Too bad he had to leave. All my global classes thereafter were never the same...

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mr. greenstein, a man who is forever to recognized as a great teacher and a awesome human bieng. he has not only taught me social studies but he has mad me think about life! mr. greenstien is the best teacher

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May Mr. Greenstein's legacy live on forever. He taught us things that are useful in life, and is one of the most respectable people you could know. He's the type of teacher you can't ever forget. Great person, great teacher. Thanks for everything, Greenstein!

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too bad he didnt vurve the grades :(but i passed anyways! phew!

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very helfpful, too over-controling, i would want to have him again because of how fair he was, best grading system any teacher ever had. not too many high grades though, but he taught important worth-knowing things. the UFO story was a bit strange though. he vicits the school a lot, great guy !

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Excellent teacher. Very strict and has very high expectations. Made us memorize maps and current world leaders but heys, at least now I know what's going on in the world.

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It was great when you visited Mr. Greenstein! Mr. Greenstein is one of THE FINEST teachers ever. Too bad he can't teach for all of eternity. He ROCKS, and I feel bad for all the freshmen who didn't have the privilege of learning from this great man this year. Thanks, Mr. Greenstein.

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BEST TEACHER EVER. nuff said

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had him all of last year, clear and helrful, altough a bit childish, like his story of how he saw a fresbee and over exadurated it like it was a flying sawser, was a fun class. altough a ton of useless information has been learned that i forgot over the summer.

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GREAT TEACHER!!! Had him for the whole freshmen year and I still remember every detail that he taught.

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Mr. Greenstein was one of kind, very detailed, very clear, and he really did care for his students. Even though strict and challenging he meant the best and I am glad I had him the year before he retired.

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Mr. Greenstein- one of the best teachers you may ever encounter in your life. His class is so organized, those kids who give your other teachers a hard time is no match for him. Mr. Greenstein is a GREAT history teacher, he has so much knowledge in his head and he's pretty fair. He's not terribly easy, but pay attention, participate, and speak LOUDLY and CLEARLY and you'll do fine. We miss you, Mr. Greenstein. Freshmen are missing out!!

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Funny, Unfair, but a good teacher. Only thing in his class is HWK, and then in class he makes u go over it. But i passed and learned a lot, too bad he retired

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i had him twice back in '02 he was the most prepared and organized teacher. He makes you learn, and he works you hard, it's a very good initiation into H.S.

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hes a great teacher. really strict with the grading. but still hes really smart really knows his stuff

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man freshman are so lucky/unlucky that he retired.A very tough teacher but you come out of his class feeling accomplished because you learned so much.

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aw man. greenstein, great teacher if you got patience

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Retired this term Spring 04... good man, good teacher.

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he's kool and im starting to be like him in learning a lot of languages

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Do the work and learn the material. Teachers of this caliber are rare so take advantage of it.

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He is sooo organized that it really gets scary at points. I have NEVER seen someone soooo organized. But then again, I do learn, alot.

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I don't care much for the 1/2/3 quiz/HW system, but the class is pretty easy.

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teaches unusual but helpful things for everyday life ignored by other teachers, & still has time for history. very valuable

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very organized - which is good so you'll never have a question on something not about the stuff he teaches

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i love greenstein, very artisitic and detailed instructor. learn a lot and nice

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Really cool teacher. U may think the maps are really stupid now, but they are really helpful later on. Had him for both terms. Got mad respect for him. LOUDER!

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he's a good teacher

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probably best global teacher in tech

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He's cool and an excellent teacher. I aced his class and all I had to do was listen, I didn't even look at him when I listened he doesn't care if you rest your head or whatever and I got a 90, 95 95 in classwork. I have him for two terms, so all you peopl

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Great teacher...gives great detail and information, and great preparation for regents...but it's a lot of work, and lots of stress...

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The best global teacher i;ve ever had. The quality is oustanding. Some say he's really mean but hes a great guy. You really earn your grade in his class!

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teacher is great he is hard in the beginning, but then gets easier with time

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Man, I had this guy in '84. He's still around? Yeah, he was a good teacher but very hard if I recall.

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hard teacher!!!!!!!!!!!!LOUDER HARD TEACHER

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AWESOME, AWESOME TEACHER!!!!!

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the first day in his class was strictly, rules and regulations. but hes a great teacher and you end up learning more than you bargained for.

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scary how good a teacher such a controlling guy could be

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He is the greatest teacher in the world. You'll learn more in day in his class than in another teacher's class for the whole year.

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Great guy, one of the best history teachers in this school (and ever), my throat used to hurt from having to talk loudly in his class. Do his work,and he is gr8

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The class is really hard, but he's fair in his grading.

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Had him freshman year, junior now, history is so much easier bc of him, MAPS ARE CRUCIAL! All my teachers ask "who had him", I'm proud I did. Love this man!

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tricky, very tricky, be very very careful in his test. I don't know how i thought of one anwser and swore that iut was right. Turns out to be wrong...

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His students either like him or hate him. I'm one of those that like him. Hey, he may be tuff, n i've only had him for a month, but i can tell dat i'll learn.

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G is hard.he wants u 2 b PERFECT!he could b funny sometimes wen he got jokes.just talk LOUD (scream!) and do ur work

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you have to be perfect speak perfect and do perfect work to pass his class

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Very experienced. Knows what he wants and how he wants it done. May be annoying, but all of it definitely pays off in the end.

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I think G is too hard

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i love this guy. best teacher ive ever had in my life. he helped me become a better person, really.

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Mr. Greenstein knows how to run a class.

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Wow. I mean wow. No, speak in complete sentences. LOUDER. Louder. SPEAK LOUDER. Quiz. HW. Quiz. Louder! Quiz. HW. HW. Test. Quiz. LOUDER. That's pretty much it.

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he rocks my socks off oh ya!!!!he is awsome---

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He is the best teacher I have ever had... people should be honored to have been in his class. wat is he doin here? he should be in some college like harvard

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learn alot sometimes boring

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a little strict but he's such a good teacher. you get to really learn a lot.

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His first 10 lessons will teach you more than any years worth of lessons in another global class.

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tough and strict but very fair

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The best teacher i have ever had. Mr. Greenstein is a very good teacher. Thanks to him, i got a 95 on my regents. I hated history, now it is my favorite class.

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i hated him and his class. hate to know that he is still there torturing others. i had him in my fresh year of '92.

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BEST TEACHER IN TECH

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great!

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he was an OK teacher but a very difficult man to deal with..i think he purposely teaches freshies cause they are easy to control

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ehh- so so.. too specific. WAY too much HW... quizzes kept you on your toes

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TOO MUCH HW. Hes cool though. Expect quizzes every other day. I guess im learnin more than i would wit other teachers

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THE B E S T TEACHER IN THE WORLD!!!!!!!!

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too specific on hw, classwork, everything! hw was alwayz a lot...super strict teacher!

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I have learned more from this teacher than any other in our school. He rewards hard work.

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too many dtails but helpful

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LET PEOPLE BE QUIET AND CORRECT HIM WHENEVER PHYSICALLY POSSIBLE ANYTIME YOU CAN SHOW HIM UP IS GOOD BUT IT ALL FAIRNESS YOU WILL LEARN A LOT FROM HIM>

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he's ok as long as he's not being too strict

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He's fair, his lessons are interesting and lucid.

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awesome teacher. absolutely effective. the best you'll ever have. take it from some1 who had him for 2 terms in a row!

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Very strict but a very fair guy. I have mad respect for him

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Thought every thing out his mouth was funny.

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very good teacher, wish he wasnt so strict though; actually worth ur 45 min

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Just getting to know him. Even the most unlogical errors can cost you watch out!

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tough, but reasonable most intellegent and quality teacher you will ever have

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tough guy, grades strict but doesnt lie bout how he grades, i actually learned

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crazy and strict but i respect the guy

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seem very intellectual... he has won my respect for him forever

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very dedicated!

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learned alot in his class but he seems to hate kids..

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TOO MUCH HW! Otherwise, a great teacher -Actually learn something in this class

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Dis is ben Mr. Greenstein is mad strict but he type nice

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i always hated history.. but i dont mind his class so much..

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Hes a good teacher. Hes funny too. I

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too much homework and quizes

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he's crazy but he's a good teacher

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hes a good teacher, but a bit on the strict side-- very fair

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demanding, expects a lot, tests are on the tinyest details, favorite word: loud

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ugh hes tooo hard!! i dont raise my hand. u know why!

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Strikt, but you gotta love him!

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very strict and hard but hes alrite

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(fav word:LOUDER!!!) hard tests, a lot of studying and homework

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1of the bst teachers i've ever had... i enjoy staying after school talkin to him

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i dunno hes my prefect eacher.. hes pretty cool...

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Learn more about Brooklyn Technical High School

5-star
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4-star
12%
3-star
8%
2-star
3%
1-star
3%
Based on 19,384 Ratings
Brooklyn Technical High School is a public high school located in Brooklyn, New York and part of 13. Brooklyn Technical High School is ranked 1,048 in New York. Learn More