Great teacher & a nice guy. A credit to St.pauls.
Brilliant maths teacher
An excellent teacher but his bizarre appearence like a character from a terry prachet novel is rather distracting
Really good teacher . . . always gets everything done in time and if he teachs you maths your going to be a brilliant matematic . . . brill teacher
Right that’s it! Who made the noise, write out the notes! Class act, funniest classes I ever attended. Did well in both maths and science, I spent a lot of time writing out the notes. I made the noise
i want him back. im in o mordas now. and found him a hundred times better.
He knows the course inside out and would have to be one of the best teachers in the school! Really devoted to the subject, is sorta annoying but otherwise a sound man!
had him for the leaving cert, great teacher and sound as well. if more teachers were like him.
hes the best maths theacher in dublin always lets us do our homeowrk in class evey time we have him very clear but never ask the smart ones any questions only the ones that are kinda bad at maths he asks questions at them
Mr. O'Brien, as annoying as he sometimes can be, is a legend. His notes are excellent.It's obvious he knows the course inside out, which is what u want from a teacher. Top Man!!!
i think he is a great teacher if you pay attention in his class
Very clear in his approach.found other maths teachers very unhelpful to if you were not an honours student.