Average 4.18 based on 19 teacher ratings
David Greisman is a Science teacher at John F Ross Collegiate & Vocational Institute located in Guelph, Ontario. When comparing David Greisman's ratings to other teachers in the province of Ontario, David Greisman's ratings are above the average of 4.17 stars. Additionally, the average teacher rating at John F Ross Collegiate & Vocational Institute is 4.08 stars.
4
Easiness
4
Helpfulness
4
Clarity
3
Easiness
4
Helpfulness
4
Clarity

5
Easiness
5
Helpfulness
5
Clarity

incredible teacher. not only got me more interested in chemistry, but taught me valuable life skills. my class alone raised $5000 for terry fox thanks to greisman's encouragement and dedication.

5
Easiness
5
Helpfulness
5
Clarity

2
Easiness
5
Helpfulness
5
Clarity

great teacher, he taught me to teach myself and got me interested in chemistry. Yes he does refer to the textbook alot but thats to get us ready for university so stop your whinning.

4
Easiness
5
Helpfulness
5
Clarity

Awesome teacher.....best science teacher ive ever had!

5
Easiness
5
Helpfulness
5
Clarity

I love Greisman. A very cool guy!!

5
Easiness
5
Helpfulness
5
Clarity

Best teacher ever. I'm not kidding.

5
Easiness
5
Helpfulness
5
Clarity

HAHA whats up G-dog great teacher. you rele inspired me thankz:)

4
Easiness
4
Helpfulness
3
Clarity

Cool guy. Very random though. One moment he will be talking about quantum theory and stuff and next moment he just goes off somewhere in mid-sentence. Pretty funny.

2
Easiness
1
Helpfulness
1
Clarity

all i remember from that class was "the laws of thermodynamics" in his annoying voice.i dont even know what the laws are.he was so annoying and picked on me.ugh

2
Easiness
3
Helpfulness
5
Clarity

G-Unit! good teacher

2
Easiness
1
Helpfulness
1
Clarity

good guy but awful teacher. Doesn't understand the material himself, leaving it hard for him to teach it and hard for the students to learn it.

2
Easiness
1
Helpfulness
1
Clarity

ugh, you were a horrible teacher, not much help for someone who doesnt understand.

4
Easiness
5
Helpfulness
5
Clarity

hes a very cool teacher. does the best demos. good teacher but he... i dunno.

5
Easiness
5
Helpfulness
5
Clarity

very clear n good teacher i enjoy ur class keep it exciting :)

5
Easiness
5
Helpfulness
5
Clarity

GREAT DEMO'S
GOOD SOUND EFFECTS WHEN WATCHIN MOVIES YOU ALWAYS KEEP CLASS EXCITING

5
Easiness
5
Helpfulness
5
Clarity

he knows his tv themes

3
Easiness
5
Helpfulness
5
Clarity

great demos, funny

2
Easiness
5
Helpfulness
5
Clarity

totally there for us

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Learn more about John F Ross Collegiate & Vocational Institute

5-star
73%
4-star
9%
3-star
7%
2-star
3%
1-star
5%
Based on 3,161 Ratings
John F Ross Collegiate & Vocational Institute is located in Guelph, Ontario with an average teacher rating of 4.08 stars. When comparing John F Ross Collegiate & Vocational Institute's teachers to other teachers in the province of Ontario, John F Ross Collegiate & Vocational Institute's teachers are below the average of 4.17 stars. John F Ross Collegiate & Vocational Institute ranks 964 amongst all High Schools in the province of Ontario. Learn More