defo best teacher ever !!!!!!!!complete legend so makes ya work and haves craic aswel
Brill teacher! Strict but can be gr8 craic out of d classroom!:)
Bit scary but savage...and a sound year head, she's willing enough to help people if they come to her
wud not go to her class with my homework done ,shes acutally so nice and totally focused ... total ledgend ,shes getting me through my jc ! -- lol
best Maths teacher ever!! Far superior to Institute of Education teachers, dont waste your money on them, Costelloe is the best
Im reli glad i av er as a teacher she is class i wudn go2class witout my h.w dun believes in every1 n as no favourites..savage teacher defo a genius....
I didn't understand physics for the junior and now its one of my best subjects..v scary but v v good
really really horrible to first years and SOUND OUT to 6th years, it's hilarious!! Feel really sorry for her when she has to teach in the FREEZING new room, really nice,gr8 teacher
i agree that she is a very good teacher but she will only work with the ''naturally brainy'' people.give others a chance please.not understanding does not make you a ''slacker''.
She scared me into doing my maths homework in second year, and i got an A in the junior cert, more teachers should teach like her!!
She's the best teacher I ever had and also a great friend. well done R!!
Any teacher can teach an honours standard class, take a foundation level class and get them all A's, thats a challenge!
Past pupil. Best teacher anyone could ever have. I love maths and problem solving because of her. Also reckon she's a genius.
excellent teacher, a's all round in her class, only the best students need apply!
There is only one word to describe this teacher......class!Thanks so much Ms Costello
Mountrath is very lucky to have her. Excellent teacher, highly intelligent and deserves a raise esp for al those extra classes
ms costello is a legend if ever there was one. an inspirational teacher and really sticks with students and calls it as it is
excellent teacher had her up to jc i wasn't the best at maths but got a b in honours thanks to her...legend if ever there was 1!!
HELP!!! I want out of her class, but I`m too terrified to say. Tons of work and I can`t get through it.
Gives too much homework, how can I do my other work? Believes her subject is the most important one. Can`t wait to be rid of it, and her!
Outstanding teacher. Puts in so much extra time with student. Reason I became a teacher!
I had Ms. Costello in TY and she was brilliant. A bit intense but a wonderful teacher!!
Best teacher ever. Her explanations r so clear she never has to go over things twice. I'd have failed maths if it werent 4 her. She deserves an award. well done
Wat can I say,wat a legend,im in college now studying Maths and I havnt met a lecturer even half as good as her.U'll reach ur full potential with her guidelines
excellent teacher. couldn't possibly have a bad word for her.
best maths teacher in the country. she should get an award. (despite all the homework)
One of the best teachers there is. dedicated to her students in every way. from a past pupil ever grateful for her help
brilliant teacher,all students have great respect for her,hardworking, manages to cover so much in just one class!
Excellent, excellent teacher!!! Possibly the best in the world!!
Fantastic teacher.i have never had a teacher that commands so much respect from her students.or to give so much homework without them ever resenting her!Legend!
Brillant teacher, but has no time for slackers. Can be very scary!
Best Maths Teacher in the Country, Teachers in Leeson Street and other revision centres couldnt hold a candle to her
Fantastic!! Gets the utmost best out of her students, takes no messing, extreamly easy to learn in her class. Hope I have her for the leaving cert!
She keeps explaining things until you understand them which is really important
Can honestly say most enthusiastic and dedicated teacher I've ever had.Always looked forward to her classes.
Best maths teacher by a long shot. So dedicated and has a genuine interest in seeing her students succeed
One of the best maths teacher ever. Wouldnt have stuck with honours if she didnt teach it.
One of the best teachers in the school, more than capable of imparting the knowledge.