Student Testimonials

The following are a few honest unsolicited testimonials from The Grow School’s Students.


Just checking in! It has been almost 3 years since class, time flies! I learned so much in class. I have been working all year at Strainwise, which has 9 dispensaries, in the 60,000 sf cultivation warehouse, doing every job, but mainly in the clone department. Thanks for the class, so important to get me started and obtaining a job. Perhaps, next year, my own greenhouse facility.
Mona G. -Denver, Colorado 2107

I attended to your class in August (2015). I just want to say that I got a job at Terrapin Care Station in Boulder! The medical warehouse. I’m so excited about this, man! It all started for me with The Grow School, I appreciate your attention.
Leo C. – Boulder, Colorado 2016

Instructor David had the excellent ability to present complicated scientific growing information, in a simple and easy to understand way, that helped me easily understand what he was talking about. I now have a much better sense of the big picture, and a great sense of confidence for growing.
Ray G. – Denver, Colorado 2016

Incredibly informative class. Tons and Tons (of info). Can’t wait to put the info to use!
Lauren B. – Denver, Colorado 2016

Instructor was very knowledgeable and presented lots of good information on the (cannabis) growing process.
Kim L. – Denver, Colorado 2016

I’m extremely pleased with the information contained in your (Online Self-Paced) 12 hour class. I have only completed 10 hours so far but will be finishing today. I do have 7 years experience indoors and a couple hundred plants under my belt and I still learned something from each video and will spread the word! Thank you guys so much for the wealth of information and easy access to it.
Jeremy D. – Hamilton, Ohio 2015

The Grow School in Denver is very Professional and Knowledgeable. I highly recommend them for growers of all skill levels!!  They have an excellent Garden Support team. Overall AAA+++ experience!!
Captain C. – Sartwell, Minnesota   2015   (Testimonial from a YELP! reviewer)

(David) You’re an awesome teacher! I’m looking to start a cannabis and cbd edibles company here in DC.
Holly D. – Washington DC    2015

I attended David DeGraff’s course GROW 101 in March in Washington, DC. I believe it was a very valuable course. Mr. DeGraff obviously has decades of experience.  What I thought was extremely important was how Mr. DeGraff was able to communicate technical concepts into language I was able to understand.  He made this scientific discipline incredibly accessible. I look forward to taking more courses and learning how to implement his technical expertise. If you have an interest in this field of study and The Grow School is touring through your region I recommend you consider attending.
Anonymous – Washington D.C.    2015    (Testimonial from a YELP! reviewer)

I attended and completed the March Washington DC GROW-101 Class you taught. Your presentation style was really helpful to translate technical concepts into layman’s (me) understanding.  The ebook is a terrific resource.
Gary C. – Washington D.C.     2015

First let me tell you how much I enjoyed The Grow School. You have definitely done your homework and it showed. Thanks for a most informative and educational 6 1/2 hours on Saturday.   You have a tough job. You have to get people up to speed not only on botanical theory, but plant pathology, genetics, propagation, photoperiodism, and growing climate- each of which are a 4 semester hour undergraduate course. The manual is extremely well written.  I have put it with my college texts as a reference volume. Basic theory I knew, but the nuances of all the disciplines as they specifically relate to “cannabis” are a quick to-the point reference.   The handbook alone is worth the cost of the whole course….. Again thanks for a most interesting Saturday.
Robt. E.  (Masters Degree-Horticulture) – Alhambra, IL     2014

I loved the class, it was very informational. I am going to keep educating myself. Thank you for the great experience.
Jesus G. – Pennock, MN     2014

Hi! Hope everything is good. Now it’s getting little bit colder here in Brazil.  The summer is going away! I am in week 2 of flowering. It’s looking great! Take care!
Bruno B. – Rio De  Janeiro,  Brasil S.A.  2014

I learned more in the elevator on the way up to my class at “The Grow School”, than I did in that entire other “Grow University” class I took in Denver…..
Andrew K. – Fort Myers, FL     2014

I want to thank you guys for the excellent class given.  It was a great experience and (instructor) David was extremely helpful and knowledgeable.
Katy C. – Aurora, CO    2014

I attended your class on 5-18 …We have followed your instructions from The Grow School Handbook. We have 6 beautiful plants! Your class was well worth the cost! Thank You.
Mike N. – Conifer, CO   2104

Just wanted to thank you for a great class yesterday.
Michael B. – Evergreen, CO    2014

Just a quick note to thank you for your time.  The knowledge we got today will prove to be invaluable in the future.
Tom F. and Mike M. – Aurora, CO     2013

You are awesome! Thank You!
Annette L. (Disabled Veteran) – Indianapolis, IL     2013


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