Average 4.17 based on 27 teacher ratings
Brian Costello is a Mathematics teacher at Sligo Grammar School located in Clare, Clare. When comparing Brian Costello's ratings to other teachers in the county of Clare, Brian Costello's ratings are below the average of 4.24 stars. Additionally, the average teacher rating at Sligo Grammar School is 4.15 stars.
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Clarity
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Knowledge
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Knowledge

Best Teacher Ever! Great Classes, great craic, never a dull moment util he retired!

5
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wat a man..ledgend!

5
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ya pure legend!! sound man!

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WHAT A LEDGEND BEST FORM TEACHER IN THE ENTIRE SCHOOL!!

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Him and mr Johnstone r da coolest

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Clarity

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1986-92 Dreadful teacher, couldn't keep control, learnt virtually nothing !

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Very nice man but is completely wasted teaching maths. Not able to control a class unfortunately. No wonder I failed badly...

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Sound man.

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he is such a sound man but seriously.........

4
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Clarity

great man!! pure sound

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class average was about 25% in the mocks. need i say any more ??????????

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Great teacher, really interesting

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what a truely genuine man,i had him for a bit of jc,thanks Brian,i really mean it,great teacher!

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Sound man, just a pity he refuses to take control of his class. Sure some people dont want to work, but they make it difficult for the rest of us :(

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i think hes a sound man i havent come across any faults yet

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mr c is da coolest teacher nd sounds

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Good teacher but really needs to keep control on his class. Sometimes very hard to get work done simply because he wont tell certain people to shutup

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Clarity

Sound man but not a great teacher.

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Sound man though!

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Stands up and teaches himself for 45 mins

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Easiness
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Clarity

no comment

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Learn more about Sligo Grammar School

5-star
71%
4-star
13%
3-star
6%
2-star
3%
1-star
4%
Based on 1,056 Ratings
Sligo Grammar School is located in Clare, Clare with an average teacher rating of 4.15 stars. When comparing Sligo Grammar School's teachers to other teachers in the county of Clare, Sligo Grammar School's teachers are below the average of 4.24 stars. Sligo Grammar School ranks 17 amongst all High Schools in the county of Clare. Learn More