David J. Wyzant
Glendale, CA · Teaches online · $239/hr · ★ 5.0 (60 reviews)
Subjects: SAT Math,, Physics, ACT Math, ADHD, Algebra 1, Algebra 2, AMC (Competition math), Calculus, Chemistry, Common Core, Elementary (K-6th), Elementary Math, Finite Math, GED, Geometry, GRE, Korean, Physics, Prealgebra, Precalculus, SAT Math, SSAT, Trigonometry
Testimonials (50)
“We feel incredibly fortunate to have found David after trying several other tutors. Over the course of 28 lessons, he has been an outstanding tutor for my son in both Algebra/SAT Math and Physics. David has a remarkable talent for making complex subjects engaging and understandable. Each lesson is high-quality, effective, and interesting, which has made a huge difference in my son's attitude towards learning. As a parent, it's a joy to see my son genuinely look forward to his tutoring sessions. Furthermore, David's communication is excellent. He is professional, responsive, and always keeps me informed. We couldn't be happier with the experience and wholeheartedly recommend David to any family looking for a top-tier tutor. He is truly the best!”
— Miller, 35 lessons with David
“David has been absolutely outstanding as my daughter’s AP Physics and Precalculus tutor. Thanks to David’s clear explanations, patience, and ability to make difficult concepts easy to understand, my daughter has consistently earned all A’s. He is knowledgeable, encouraging, and truly cares about his students’ success. We are incredibly grateful for his help and highly recommend him.”
— Priti, 26 lessons with David
“David has been helping my son who is in 8th grade with math, specifically pre-algebra and has been amazing. My son has ADHD and it is harder for him to focus yet David was always able to get his attention and explain things the way was needed for my son to understand it, better then at his school.”
— Alina, 14 lessons with David
“My daughter has very strong math skills, but has become rusty on some concepts since she hasn’t taken math for over a year. David is able to help her through any material she needs brushing up on, and my daughter feels David has prepared her well for the SAT and ACT.”
— Deepti, 9 lessons with David
“David is helping me study for the math portion of the GRE, and already I am beginning to feel more confident in my abilities because of the skills and techniques he has taught me. He is patient and can break down complex concepts into terms anyone can understand. I'm extremely happy to have found a tutor who is helping me accomplish my goals!”
— Olivia, 14 lessons with David
“We started tutoring with David in July of 2025 with the sole goal of improving our son's math SAT before the August test date. Our son ended up raising his Math SAT score to a 790! That was an increase of 130 points in less than two months. David's tutoring works and that score is the evidence to prove it. So appreciative of his help!”
— Jenelle, 10 lessons with David
“My son has taken the SAT three times. He could not get past 740 on the math section. We hired two other tutors, and the scores were even lower. I found David, and he worked with my son for just over two months to prepare. My son found him patient, clear in delivery, kind, and very intelligent. He really enjoyed his sessions with him. My son just took the August SAT and hit a 780 on math- putting him over the 1500 mark! We are all so happy with the results. I am so grateful for David and highly recommend! A++++”
— Cynthia, 7 lessons with David
“I worked with David for SAT math prep and thanks to him I was able to score a 780. What stood out immediately was his demeanor which is relaxed and calm yet always straight to business. He never wasted time but he also made every session feel manageable and stress free. He really has an acute conceptual understanding of the toughest SAT math questions. When most tutors just teach tricks he dives into the underlying ideas which is exactly what makes the difference once you are scoring above 700. Post 700 SAT math really is a different ball game and David knows how to guide you through it. He also really tries to make a plan and strategy that works for you. We had contacted other tutors who ran away when we asked them to analyze critically what my strengths and weaknesses were but David embraced it. He took me from a 710 to a 780 by focusing on the areas that mattered most. I would really reccomend him to anyone trying to crack the toughest parts of SAT and I really owe a large part of my success to him”
— Viv, 8 lessons with David
“Me and David went over a bluebook practice test together and reviewed some harder problems and concepts. David helped me understand the material and gave me the tools to practice.”
— Arno, 10 lessons with David
“David is great and my son did SAT Math Prep with him . He is very knowledgeable and patient. My son really liked his way of teaching and felt confident with SAT Math. I highly recommend him.”
— Prisy, 29 lessons with David
“First, David is super friendly and organized. He's very nice but also doesn't sugar coat things - you'll know what you need to work on. Other tutors will help you with your specific questions, but David has an entire process for uncovering where you need help and then focusing on those areas. I wish we would've started with him in the first place!”
— Tim, 12 lessons with David
“David has been an excellent SAT Math tutor for my daughter. He explains concepts clearly, is very patient, and always arrives on time. He’s flexible with scheduling and truly cares about student success. My daughter made great progress under his guidance. We’re very grateful for his help!”
— Eva, 19 lessons with David
“David was great!!! My daughter really enjoyed the session with him. He is very knowledgeable and organized. Easy to book and work with him. She is looking forward to the next session.”
— Rebecca, 3 lessons with David
“My daughter has worked with several tutors and David is one of her absolute favorites. She looks forward to her calculus sessions with him which is definitely saying a lot! He’s easy to work with, patient, explains difficult concepts in a simple manner, and she comes away from her time with him confident and prepared. He’s one of the best tutors we’ve worked with. He’s also very friendly and easy-going, which makes the sessions feel fun and enjoyable - which again is saying a lot when it comes to calculus. Definitely recommend David!!”
— Robyn, 10 lessons with David
“We had a great experience with David. He was very organized and had a clear, structured approach that really helped my son stay focused. My son liked his teaching style and felt much more confident with SAT Math. Highly recommend!”
— Abinash, 9 lessons with David
“David is super effective. My daughter has taken lessons for SAT Math and Physics. He’s organized, patient and excellent at explaining and motivating. Highly recommend.”
— Steve, 28 lessons with David
“David has been an outstanding tutor and a tremendous help in improving my SAT math performance. From the very beginning, he demonstrated a deep understanding of the SAT format and tailored his approach specifically to my needs and learning style. He is always patient, supportive, and more than understanding when scheduling conflicts arise, which has made working with him a low-stress and enjoyable experience. What sets David apart is his commitment to my progress. He goes above and beyond by assigning additional practice and homework that challenges me to strengthen my skills outside of our sessions. His consistent feedback and encouragement have built my confidence, and the impact is clear—my math scores have steadily improved, and I feel more prepared and capable with every practice test. David’s teaching style is highly effective. His explanations are clear and easy to follow, and he offers a variety of strategies to approach different question types, allowing me to find the methods that work best for me. His structured, methodical approach ensures that no concept is left unclear, and he always takes the time to review difficult problems until I fully understand them. Without a doubt, working with David has been one of the best investments in my academic journey. His professionalism, dedication, and expertise make him an exceptional tutor, and I would highly recommend him to anyone looking to improve their SAT math skills. He is absolutely worth every penny.”
— Edward, 18 lessons with David
“Mr. David's tutoring sessions provided so much clarity for me as a student, and helped in my preparation for the SAT, he is patient, and very understanding of anything and everything! his knowledge and ability to explain concepts were also super helpful!”
— Makeda, 10 lessons with David
“David J is a great teacher, relatable and just real. My sons are getting the reinforcement, guidance and feedback they need to prepare for the upcoming exam. 🤞 wouldn’t hesitate to work with him again.”
— Lisa, 8 lessons with David
“This review is written with deep disappointment and frustration. If you're a parent or student looking for a dependable, professional tutor — especially during high-stakes academic periods — you need to know what happened with David J.before hiring him. We hired David to help support our college-aged son through an extremely challenging science course. From the beginning, we were hopeful. David seemed knowledgeable and our son connected well with him. We invested thousands of dollars and structured our son’s academic plan around his availability and expertise. But what unfolded was both distressing and damaging. David has a pattern of taking time off — even going on vacation during finals, without warning or planning. This wasn’t a one-time emergency. Over multiple terms, he regularly became unavailable at the most critical moments. But the final straw was this past term: he completely disappeared right before finals, leaving our son with no academic support and no clarity on what was going on. There was no warning, no gradual reduction in sessions — just silence. David ignored multiple messages from both my son and me. He left my son hanging for weeks, unsure whether or not David would show up. During this time, our son was under intense stress, still hoping for guidance, and spiraling deeper into anxiety and academic uncertainty. When someone is in a mentorship or tutoring role — especially at this price point — communication is the bare minimum. David didn’t even meet that. He made no attempt to check in, offer referrals, make up missed time, or be accountable in any way. The silence was total. As a direct result, our son was forced to withdraw from the course, which he will now have to retake. The emotional toll of this betrayal of trust — combined with the financial loss and the academic delay — has had a significant impact on our family. This isn’t just about a missed session. It’s about a complete failure of professional ethics, responsibility, and care.When someone commits to guiding a student through a difficult class, especially one that determines academic advancement, they must show up — consistently and especially when the pressure is highest. David didn’t. He vanished when it counted most — and worse, he has a history of doing so. Our son didn’t just lose a tutor. He lost trust in the academic support system. He questioned whether asking for help was worth it. That is not the lesson any young person should be left with. To be clear: David J. may understand the content, but he is not dependable, not communicative, and not professionally responsible. If you are considering hiring him, especially for a student who needs structure, follow-through, and reliability — we strongly urge you to look elsewhere. You cannot afford to be abandoned during finals.”
— Rosa, 88 lessons with David
“He worked with my daughter for her physics exam. He was extremely thorough and knowledgeable. I also love his feedback emails.”
— Frank, 6 lessons with David
“David is an exceptional tutor who helps my son with very challenging AP Calc AB problems. My son looks forward to meeting with him and is impressed by his knowledge and wonderful teaching skills. My son feels comfortable asking him questions and knows that when he meets with his David, his confidence and abilities will grow.”
— Michelle, 3 lessons with David
“My son loves to doing lesson with David! He’s such a great teacher!!! So reliable!! Glad to find the perfect fit on my son.”
— Oh, 55 lessons with David
“A couple of sessions in and great progress. Seems our son is finding some gaps in his understanding of Precalculus. David iis explaining subject matter in a way our son is really catching onto. Highly recommend!”
— Mark, 85 lessons with David
“As a mom, I couldn’t be happier with the support my child has received from David. From the very first session, it was clear he genuinely cared about my child’s progress and well-being. The results have been incredible—not just in terms of improved grades but also in my child’s confidence and enthusiasm for the subject.”
— Mina, 36 lessons with David
“David is an exceptional physics tutor who goes above and beyond. Whether it was helping with tricky problem-solving techniques or preparing for exams, David consistently empowered my son to feel confident and motivated. Also, David's way of connecting with my son to tailor his teaching style was exactly what I was looking for in a tutor. Being an educator myself, I'm always asked about tutors. In terms of physics, I don't believe there's a better tutor out there than David!”
— Cindy, 10 lessons with David
“David is a great and reliable teacher! My son is always enjoying lessons with him. He’s answering so fast when I ask him a question. Looking forward to seeing him, and Highly recommended!!!”
— Oh, 55 lessons with David
“David was very easy to work with and responsive when asking about scheduling. He was flexible with times/dates. He is very prepared and enthusiastic about tutoring. He emailed ahead of my son’s session to prepare for his 1st session. From my son regarding his pre calculus tutoring: “David is a really sociable person and knows how to explain the material very well. He helped with kinematics and opened my views on how to solve specific equations in different situations.””
— Sandy, 99 lessons with David
“David is teaching me the math foundations of Algebra II. I only had one lesson, but plan to have more. He further helps your understanding of the material by assigning you problems outside the tutoring session to make sure that you understand the material.”
— Catania, 1 lesson with David
“My daughter needs some last minute SAT Math support. David was quick to jump on board, assess where my daughter needed help most and get to work. He provided numerous problems for her to work through both in class and as homework. He did it in a manner that was supportive, held her accountable and personable. My daughter is happy to recommend David as she feels confident that can improve her score with David's help.”
— Vanessa, 2 lessons with David
“Incredibly knowledgeable yet accessible teacher. He has a gift to not only understand and solve difficult math problems quickly but also communicate his thought process along the way, which made learning almost simple. Great guy, highly recommend!”
— Alex, 13 lessons with David
“Making a reservation for the first class with David was challenging due to high demand from other students. My son, Joe, was not impressed by previous tutors, so I was eager to hear his review. He was super happy with David's initial lesson. Joe is eagerly looking forward to the next one, and I will continue to update on the progress. Thank you”
— Sungjun, 3 lessons with David
“My daughter felt David had great preparation before the class by providing diagnostic test, and he was very patient and very knowledgable in what she asked for.”
— Ken, 1 lesson with David
“My son had his first SAT math session with David. He said it went extremely well and that David helped him with quite a bit of material already. David gave him some practice tests before their next session, and my son is motivated to work on them. Thanks so much, David!”
— Sandra, 4 lessons with David
“David has been very helpful to my son. Explains things that actually makse sense to him. He's very flexbile when it comes to scheduling and will work with us if we need to switch things around. So far David has been perfect for both my son and me!”
— Lanie, 5 lessons with David
“David is an excellent tutor who really know his stuff and is very effective at teaching others. I definitely recommend David to others - he is worth it! Availability can be limited so be sure to book ahead.”
— Penelope, 11 lessons with David
“David tutored my daughter in AP Precalculus. He was able to break down complicated concepts in a simple way that is easier for her to understand. He also utilized different math skills to explain the problems in a more comprehensive manner. My daughter enjoyed David's lessons and will continue to work with him.”
— Sue, 1 lesson with David
“David is responsive, professional, but yet very easygoing. I enlisted David’s help when my college son came to me frustrated and confused in his first week of Calculus 2. Although my son was hesitant to have virtual tutoring sessions due to flashbacks with COVID remote learning, he was willing to give David a try. After the tutoring session, my son was smiling and was relieved. He says that David explained the subject well and now “I understand it and can do it”. He also complimented David being very easy to communicate with and would be happy to work with him again. We are have no regrets and so happy to have found David.”
— Jackie, 1 lesson with David
“Excellent tutor. He is very patient and comprehensive in his explanations and helped my son easily understand concepts that seemed foreign to him before. Highly recommend David for anything concerning math.”
— Carolina, 51 lessons with David
“My son was having an incredibly hard time with content that he now genuinely enjoys (after just one lesson)! I am amazed at my son’s new-found enthusiasm, and I couldn’t be thankful enough to David for his patience and knowledge. He’s a great teacher and I recommend his lessons with my eyes closed to anyone who is struggling in whatever he’s qualified to teach, specially math.”
— Carolina, 51 lessons with David
“David is an amazing tutor who keeps sessions relaxed, approachable, and tailored to you. He is very easy to get a hold of and responds quickly. David is incredibly smart and will be able to help you with any problem or subject you can think of. I would not have done as well as I did in my physics one course without him!”
— Sebastian, 24 lessons with David
“David is a great tutor. His session is interesting but very helpful. He is flexible on scheduling to accommodate my busy schedule. Thanks David for helping me with Precalculus!”
— Andy, 14 lessons with David
“Easy-going, friendly, & knowledgeable teacher. Helped me with alot of the confusion I had with Precalculus. Gave me practice problems. From beginning to end, he was very prompt with responses. Thanks David! Highly recommend!”
— Amy, 11 lessons with David
“David has been great helping my son with his transition from a public school to a private IB program where he is taking IB HL Maths AA. We plan to continue working with him.”
— Joy, 42 lessons with David
“My son met up with David 5 weeks into his AP Calculus class. He knew about some things but pretty fuzzy and uncertain about a lot of concepts. The first lesson David reviewed and clarified these concepts and was able to even teach him the concept that his teacher talked about in class the next day. My son told me that he finally understood what his teacher was talking about in class. After the second meet up with David, son tells me that David told him what the real world applications were for learning this sine and cosine stuff. That kind of blew his mind. Here is some background: my kid has worked with a few tutors over the years and everytime I ask him how did the session go, the reply I get is "it was fine." This time he excitedly tells me he is starting to understand why this is important to learn and I get a pretty detailed retelling of what they went over. Thank you David!”
— Candice, 50 lessons with David
“David is a wonderful tutor. He prepares very thoroughly for each session and truly engages with our son. We’re extremely thankful to have him helping our kid though his first semester of college math!!!”
— Catherine, 10 lessons with David
“this is my first time ever getting a tutor and i’m really happy that i got him. he’s very personable and thorough with his explanations of every subject. super chill dude as well”
— Maddi, 18 lessons with David
“With his ADHD, keeping focused is often a challenge. What David was able to do is keep our son engaged the whole session. He was prepared and able to go over any of the questions on the practice test. He was also patient which is also important.”
— Alain, 1 lesson with David
“I requested a session with David very last second for some Multivariable Calculus (Calc 3) work. he was able to squeeze me in same-day and go over all the work I requested despite a tight time frame. David adjusted our lesson to be quick in pace while still explaining the process of every problem so that I could grasp it when I re-watch the video. Don't hesitate to reach out to David with any math concerns- after my first session I left feeling more confident in myself for my exam and feel like I am in good hands for any difficult concepts I have in the future.”
— Jonathan, 6 lessons with David
“David quickly clarified some concepts I struggle with in my calc 2 class. His teaching style is very much catered to his students immediate needs, while still making sure their foundation is sound.”
— Joshua, 4 lessons with David