Dr. Chen is proud to have coached four Campers in USNCO 2025!

Decoding of Chemistry Olympiad

Decoding of Chemistry OlympiadDecoding of Chemistry OlympiadDecoding of Chemistry Olympiad

Decoding of Chemistry Olympiad

Decoding of Chemistry OlympiadDecoding of Chemistry OlympiadDecoding of Chemistry Olympiad
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    • Home
    • About
    • USNCO
      • General Overview
      • FAQs
      • Learning Objectives
      • DCC
      • Annotated Solutions
      • Misconception
      • Laboratory
      • Study Camp
    • Classes
      • Introduction
      • Registration
      • Placement
      • Testimony
      • National Preps
      • Open Classes
      • Lecture Notes
    • Resources
      • Textbooks
      • IChO
      • CChO
      • Mendeleev
      • VChO
      • WUCT&BCT
      • Other Sites
    • Consultation
      • Newsletters
      • Email
      • Discord
      • WeChat 微信
  • Home
  • About
  • USNCO
    • General Overview
    • FAQs
    • Learning Objectives
    • DCC
    • Annotated Solutions
    • Misconception
    • Laboratory
    • Study Camp
  • Classes
    • Introduction
    • Registration
    • Placement
    • Testimony
    • National Preps
    • Open Classes
    • Lecture Notes
  • Resources
    • Textbooks
    • IChO
    • CChO
    • Mendeleev
    • VChO
    • WUCT&BCT
    • Other Sites
  • Consultation
    • Newsletters
    • Email
    • Discord
    • WeChat 微信
Maximize Your Chemistry Potential!

USNCO 2025 National Prep Class with Dr. Chen

For dedicated students aiming to excel in the Nationals!

📍 Online via Zoom
🕣 8:30 - 10:00 PM ET
💰 Tuition: $599 (Discount for DChO alumni)
📅 Class Dates: March 23 - April 3, 2025 (8 Sessions)

📩 Email Dr. Chen at chen@dcho.us for any questions

🔥 Recording of Session 1 on March 23 (N2022 P1 and Reaction Writing)🔥

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Hear What Students Say about Dr. Chen's National Prep Class!

Check the Testimony
Maximize Your Chemistry Potential!

Advanced National 2024 Prep with Dr. Chen

Aiming for top awards in the 2024 USNCO? Dr. Chen's exclusive National Prep Class is your key to excelling. Designed specifically for the most dedicated students, this class offers a rigorous curriculum and mock exams to tackle the most advanced topics in chemistry, ensuring you are fully prepared for every part!

Congratulations

Congratulations to Yiwei L, Luke C (DChO2022), Nathan W (DChO2022), Andy X, Hansen Y, Jolene C, Juirui H, Victor L, Benjamin L, Weili L, Elina L, Xingchuan M, Ishan M, William P, Alexander P, Grace Q, Lauren S (DChO2022), Tianyi W, and Michael Z for earning High Honors and Honors Awards at the USNCO 2023! Special kudos to Yiwei and Luke for making it to the Study Camp!

Award List
Dr. Chen is so proud of supporting each of you!

Congratulations

Luke C (camper), Yiwei L, Zibin S, Andre A, Daniel K, David L, Elvin L, Lauren S, Tristan W, Nathan W, Michael Z on winning great awards in the USNCO National Exam 2022. 

Find out more

Recording of Session 1 of Adv. National Prep 2024

Intro, Strategies, and Analysis of N2021 P1
Watch it for FREE!

Recording of National-level Class in the Past

Detailed Explanation of National 2021 Part I MCQs

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Interested in Chemistry Olympiad Classes for 25–26?

Choose the path that fits you best:

  1. Self-Study + Diagnostic
    Study Honors or AP Chemistry on your own, then take Dr. Chen’s diagnostic tests to determine fall placement. Recommended textbooks
  2. Summer Class with Dr. Chen
    Take an intensive AP Chemistry+ or Organic Chemistry Class this summer with Dr. Chen to prepare for Level 2, 3, or 4 Olympiad training in the fall.
  3. Start Now – Self-Paced
    Prefer to begin right away? Purchase recordings and materials for Level 2, 3, or 4 from 2024-25 and start learning at your own pace!

Sign up for Dr. Chen's Summer Class for AP Chemistry+ or Organic Chemistry