Here are some testimonials that a few of my students and teachers who use this website have given over the years: 


  • A several-hundred page packet given to each student at the beginning of the year, this manual covers the entire course, complete with concept outlines, examples, and problem sets. Instead of dealing with folders, worksheets, textbooks, and notebooks, Mr. Schwartz's manual streamlines the learning process, and allows students to focus on the concepts being learned and the math behind them. The sheer amount of effort and care taken by Mr. Schwartz in his creation of this teaching tool is clear – all of my friends and fellow students would be quick to tell you how invaluable it was in our learning and understanding of Calculus. – Sam Tsui (Yale University)  
  • My hat is off to you.  This really is a remarkable collection of questions--and your site is tremendous.  I hope you won't mind if I add it to my "favorites" list and point people to it.  Thanks for all the time it took to do this.  - Daren Starnes


  • The manual was wonderful, the best teaching tool I have ever seen. It made studying and learning much easier because there were comprehensible explanations, examples, and practice problems. - Meredith Brooks (University of Chicago) 
  • I want to thank you for all those materials that are available at your site. I teach calculus Ab at a Colombian school and thaere are not many schools that have this program at our country so being able to look things up has been great. Thanks again. - Alejandra Buenhora


  • The instruction manual that you wrote was brilliant - easy to understand with good practice problems and well organized. - Jared Russell (Cornell University)  
  • I love the manual and think it is one of the best aspects of the course. It allows student to really understand what is going on and to see what they will be expected to do in the future. - Lisa Brockway (Penn State University)  
  • I used your sample Jeopardy game today and the students loved it.  You know how difficult it becomes to review when everyone loses academic steam. I have purchased your precalc and calc materials.  I use them everyday.  Thank you. - Marge Karpinski (Northeast High School - Philadelphia)


  • Just wanted to let you know that your stuff is amazing.  And I appreciate how much you share with the world.  We are lucky to have you in our midst! - Annie Evans

  • I feel that the manual should be used for ages and ages to come. It simply made things clearer than the textbook. - Rena Zheng (University of Pennsylvania)  
  • The manual was excellent. It gave me a feel for college books where you can write in it and take notes in it. - Stacia Eggleston (University of Delaware)  
  • My AP Calculus Exam scores are in, and 89% of my students got either a 4 or 5...approximately 60% of them scored a 5!  There is NO WAY I could have achieved this success in my 1st year of teaching the course without your materials.  Thanks again!!!!!!!!!!!!!!!  - Rick Marciniec


  • I found the manual to be extremely helpful and it truly was my lifesaver this year. - Arin Dinovitz (Penn State University) 
  • The textbook is rarely needed, because the manual does an excellent job of covering everything. - In Cho (Ursinus University)  
  • I love the manual. Concepts are introduced and homework follows it immediately. There is little flipping of pages or fumbling with papers when trying to do homework or review. - Zach Martin (Princeton University)  
  • The manual was better than any textbook. There is the simple advantage of being able to carry the manual around in a folder and being able to write in it and being able to keep it. - Nick Terruso (Penn State University)  
  • The manual was my best friend this year. Being that I am an extremely unorganized and scatterbrained person, the manual forced be to keep everything in order which ultimately was a huge benefit come May. - Mallory Grivner (Penn State University)   
  • The manual is possibly the single most useful thing I have ever been given by a teacher to learn course material. It is God on paper. Without it, I would have died on the A.P. test. I’m not a good note taker, but with all the information in the manual and important concepts and formulas boxed, it was easy to keep organized and to use for studying. - Antony Lopez (Drexel University)  


  • Thank you so much for all you do to make a difference in not only your own students but students across the globe. - Linda DeRegnaucourt


  • I have used your website in the past and it has been such a wonderful addition to my toolbox!  I am a relatively new teacher and would be lost without resources like this one.  Thank you so much for your efforts and also for making them available for free.  - Pamela Kinzly


  •  I have been looking for the perfect review material to use without requiring my students to go out and purchase an expensive review book.  We are at a point in the school year where there is no budget for a class set of review books either. I can print one of your manuals for every student and it will cost $12.50 (total!). Thank you for the resource you are providing for my students. - Stacey Seravino
  • Stu - on behalf of my AP Stats students and myself (a new AP Stats teacher) I just wanted to say "thanks" for providing some great worksheets here! My students often prefer worksheets over book problems and they often ask "when are we going to do another Stu worksheet?" I told them I had a great one from you about the 12 Days of Christmas and the probabilities associated with it . . unfortunately, we aren't quite far enough into the subject of probability to get to it this week. I told them we'd probably wait until after break in January to do it. One student said "Stu would be disappointed in us. If he thinks we should be able to do this by Christmas, we should work harder." Love it!! :) So I just wanted to say THANKS for some great worksheets! - Donna Langenderfer


  • Thanks! Your material is absolutely outstanding. The students find it challenging and interesting. They got a 5 last year on their AP Calculus BC exams. I'm using it again this year . I also plan to buy your precalculus material for my precalculus class. You must be a fantastic teacher to be able to create such incredible material.  I am in my 3rd year of teaching and hope, one day, to be able to produce lesson plans of this calibre.- Prasanna Valamuri


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