Average 3.93 based on 23 teacher ratings
Denis Costello is a Science teacher at North High School located in Torrance, California and part of Torrance Unified. Denis Costello's 23 teacher ratings contributes to North High School's ranking of 1,163 in California. Additionally, the average teacher rating at North High School is 4.09 stars.
3
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Clarity
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Easiness
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Clarity

great teacher! very helpful

5
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Clarity

5
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4
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Clarity

cool teacher. funny and into what he teaches.

1
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4
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4
Clarity

Awesome guy. Not the best teacher, but not super bad.

2
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5
Helpfulness
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Clarity

He's cool.

3
Easiness
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Clarity

Awesome guy....to much work....

2
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4
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his class is really hard.. but i think he teaches enough & even if hes strict he can be understanding. he is very funny! you have to study a lot though.

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Clarity

i hated him in high school, but i love him for getting me ready for college.

2
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5
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Clarity

great teacher over all. the notes can be a pain sumtimes but without them i would get an F-BOMB on my tests.

3
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5
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Clarity

Awesommmmmmmmmmmmmmmmmmmmmmmmmmmm

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having costello for chem is the worst. goes off on tangents, tells us things"we dont need to know" before the things we do. never available for help. distracted

2
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i love all the extra credit assignments...good guy...means well

2
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5
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Clarity

TOOOOOO MANY NOTES, over all he is a good teacher. makes a batter hands on teacher then a class room teacher.

3
Easiness
3
Helpfulness
3
Clarity

he a cool teacher, however, its sometimes hard to understand what hes trying to teach you.

2
Easiness
2
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Clarity

He lacks the ability to keep the lesson plan concise, way to much unnecessary work losing the average student in a mess of unfinished work, not recommended!

5
Easiness
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Helpfulness
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Clarity

He is sooo very awsome!

3
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Odd teacher. . .ok at teaching, but sometimes seems distracted and it makes him teach worse. Otherwise, he is ok.

2
Easiness
5
Helpfulness
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Clarity

too many notes!!! but good teacher all in all

5
Easiness
5
Helpfulness
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Clarity

nice funny teacher!

3
Easiness
5
Helpfulness
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Clarity

i love this class!! I fraeking hate science too! makes me want to be a marine biologist. Great speaker, really clear, and awesome teacher.

1
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Helpfulness
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Clarity

his notes are concise and easy to understand, but there are a Lot. and his tests are reaLLy hard. he's really into marine science

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Clarity

nice guy and all, but not the best teacher... vague at times and has a hard times explaining things.

3
Easiness
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Helpfulness
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Clarity

hahah hes an a-okay teacher i guess. but hes really funny and extremely random. and yes, a better friend rather than a teacher. LOL. talks too much sometimes though. and owns cool hamsters!

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Learn more about North High School

5-star
74%
4-star
8%
3-star
8%
2-star
3%
1-star
4%
Based on 1,317 Ratings
North High School is a public high school located in Torrance, California and part of Torrance Unified. North High School is ranked 1,162 in California. Learn More