Average 4.51 based on 14 teacher ratings
Garry Costello is a retired teacher at Mount Gambier High School located in Mount Gambier, South Australia. When comparing Garry Costello's ratings to other teachers in the state of South Australia, Garry Costello's ratings are above the average of 4.37 stars. Additionally, the average teacher rating at Mount Gambier High School is 4.42 stars.
4
Easiness
4
Helpfulness
5
Clarity
5
Knowledge
5
Textbook Use
5
Exam Difficulty
5
Recommended
5
Easiness
5
Helpfulness
5
Clarity
5
Knowledge
5
Textbook Use
5
Exam Difficulty

Brilliant Principle, I could not fault him when I was at school.

5
Recommended
5
Easiness
5
Helpfulness
5
Clarity
5
Knowledge
5
Textbook Use
5
Exam Difficulty

Amazing Principle, very caring and understanding, guided me though school and helped me a great deal, highly recommend Principal Garry Costello

4
Easiness
5
Helpfulness
5
Clarity
5
Knowledge

Amazing teacher, amazing principle. Anyone who is educated by Mr Costello lives a better life for it.

5
Easiness
5
Helpfulness
5
Clarity
5
Knowledge

Garry Costello is undoubtably my favorite principal I have ever had.

1
Easiness
2
Helpfulness
4
Clarity
3
Knowledge

Glad he's gone. Better place without him.

5
Easiness
5
Helpfulness
5
Clarity

I dont know anyone who agrees with the last comment 1/25/11. Gives heaps of help

3
Easiness
2
Helpfulness
2
Clarity

Poor teacher, far more concerned with his own image than that of the students.

5
Easiness
5
Helpfulness
5
Clarity

5
Easiness
5
Helpfulness
5
Clarity

4
Easiness
4
Helpfulness
4
Clarity

5
Easiness
5
Helpfulness
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Clarity

best teacher ever, no joke :)

3
Easiness
4
Helpfulness
4
Clarity

4
Easiness
5
Helpfulness
5
Clarity

Mr Costello was the most inspirational teacher I ever had. He never gave up on a kid (no matter how naughty). I am in awe of this man and yet, I feel completely at ease around him. BEST TEACHER EVER!!

2
Easiness
5
Helpfulness
4
Clarity

Great teacher, who has led our school really well for the last however-many years. Always enjoy talking to him wherever I see him

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Learn more about Mount Gambier High School

5-star
73%
4-star
16%
3-star
5%
2-star
1%
1-star
1%
Based on 82 Ratings
Mount Gambier High School is a private high school located in Mount Gambier, South Australia. The average teacher rating at Mount Gambier High School is 4.42 stars based on 82 ratings. Learn More