Great teacher for math, but called on people randomly which can be nerve-wracking for some students. Other than that, he was a great teacher and was always happy to help! He made math funny, and is not the typical mono-tone, boring math teacher!
Great teacher! Had to always second guess my answers because he would purposely put the wrong answers. Only did work in that class if it had something to do with lunes. He was right about doing your homework.
Favorite teacher ever, I learned alot from him and he's really funny too. I enjoy going to his classes. Thanks for being a great teacher Mr. O'Brien!
Math critics give O'brien two thumbs up and praise him in the sensational sitcom Numb3rs.The young math teacher though lacks height makes up for his performance with pure charisma.
The best all around teacher at ACS. He's easy to talk to, truly believes in his students and is definitely hilarious. I laughed everyday =) Thanks man
hes alright....needs to explain things a little better...but he is funny...and if u dont get something...try using "magic" first..lol....overall not a bad teacher
He Believes in you , as long as you believe in yourself, ask for help he will be there.. thanks for helping me O'brien!!
Starts with an H, rhymes with Filarious...Mr.Obrien makes calculus fun..not an easy task..what can i say, the man's brilliant, and a great person. Thanks mann
Best teacher I've ever had!!! He made math enjoyable..! He also is very easy to talk to, and joke around with too!
Oh man Mr. O'Brien is the cooooolest! Made good ole data managment awesome! However I still cant tell when he's joking or not :P
I had him in summer school and I am tring to get him next year in gr 11 awesome teacher in summer school!
He's the best. I hated math until he taught me. Thanks, Mr. O'Brien!!
Truly amazing- he was one of the easiest teachers to talk to, once you learned to tell when he was joking. Only time I've looked forward to math.
Very smart teacher. If you think his class is a lot of work, wait until university...
A little heavy with the homework load BUT quite possibly the best teacher I've ever had. He actually made Math my most looked forward to class of the day.
Starts with a, and rhymes with owesome teacher. Best math teacher ive ever had. Andrew Lloyd Webber and Bon Jovi Rule!
Mr O'Brien is awesome. He's a hard teacher who plays these awesome tricks on his students. I have helped him in his ways, and he is the best.