Signup for Module 3 of Level 2/3/4 in Progress!
Overview of DChO Classes in 2024-25
Level 2 [Intermediate] - AP Plus & USNCO Local
Module 1 (recordings available)
Module 1 (recordings available)
Module 1 (recordings available)
for students with a 5 in AP exam or motivated students taking AP Chemistry concurrently
covers Stoichiometry, Atomic Structures, Periodicity, Molecular Structures, Bonding, IMFs, Gases
8 weekly sessions (12 hours in total), late-Aug to mid-Oct
$399 (discounted) for all recorded sessions, lecture notes, and problem sets in 2024-25
Module 2 (recordings available)
Module 1 (recordings available)
Module 1 (recordings available)
for students with a 5 in AP exam or motivated students taking AP Chemistry concurrently
covers Thermochemistry, Kinetics, Chemical Equilibrium, Acids&Bases, Buffer&Titrations, etc.
8 weekly sessions (12 hours in total), late-Oct to mid-Dec
$399 (discounted) for all recorded sessions, lecture notes, and problem sets in 2024-25
Module 3 (open for signup NOW)
Module 1 (recordings available)
Module 3 (open for signup NOW)
for students with a 5 in AP exam or motivated students taking AP Chemistry concurrently
covers Descriptive Chemistry, Laboratory, Fundamental Orgo/Biochemistry, Electrochemistry, Thermo
8 weekly sessions (12 hours in total), early-Jan to late-Feb
8:30-10:00 PM ET on Saturday (tentative)
$499 for all live classes, lecture notes, and problem sets in 2024-25
Detailed Introduction to Module 3 in 2024-25
Recording of Session 1 in 2024-25
Level 3 [Advanced] - Post-AP & USNCO National
Module 1 (recordings available)
Module 1 (recordings available)
Module 1 (recordings available)
for students who scored 40 or higher in USNCO Local 2024 (email chen@dcho.us for consultation)
covers Advanced Stoichiometry, Periodicity & Bonding, Coordination Chemistry, Reactions, etc.
8 weekly sessions (12 hours in total), late-Aug to mid-Oct
$499 (discounted) for all recorded sessions, lecture notes, and problem sets in 2024-25
Module 2 (recordings available)
Module 1 (recordings available)
Module 1 (recordings available)
for students who scored 40 or higher in USNCO Local 2024 (email chen@dcho.us for consultation)
covers Integrated Chemical Principles [Kinetics, Thermodynamics, Equilibrium, Electrochemistry]
8 weekly sessions (12 hours in total), mid-Oct to mid-Dec
$499 (discounted) for all recorded sessions, lecture notes, and problem sets in 2024-25
Module 3 (open for signup NOW)
Module 1 (recordings available)
Module 3 (open for signup NOW)
for students who scored 40 or higher in USNCO Local 2024 (email chen@dcho.us for consultation)
covers Applications in Thermodynamics, Descriptive Chemistry/Laboratory, Advanced Organic Chemistry
8 weekly sessions (12 hours in total), early-Jan to late-Feb
$599 for all live sessions, lecture notes, and problem sets in 2024-25
8:30-10:00 PM ET on Sunday (tentative)
Level 4 [Master] - Study Camp & IChO (NEW)
Module 1 (recording available)
Module 1 (recording available)
Module 1 (recording available)
for award-winning students in the 2024 Nationals, aim for Study Camp and the U.S. Team.
covers Advanced Reactions, Coordination Chemistry, Analytical Chemistry, etc.
8 weekly sessions (12 hours in total), late-Aug to mid-Oct
$599 (discounted) for all recorded sessions, lecture notes, and problem sets in 2024-25
Module 2 (recordings available)
Module 1 (recording available)
Module 1 (recording available)
for award-winning students in the 2024 Nationals, aim for Study Camp and the U.S. Team.
covers IChO-level Chemical Principles with an emphasis of problem solving
8 weekly sessions (12 hours in total), mid-Oct to mid-Dec
$599 (discounted) for all recorded sessions, lecture notes, and problem sets in 2024-25
Module 3 (open for signup NOW)
Module 1 (recording available)
Module 3 (open for signup NOW)
for award-winning students in the 2024 Nationals, aim for Study Camp and the U.S. Team.
covers IChO-level Integrated Organic Chemistry with an emphasis of problem solving
8 weekly sessions (12 hours in total), early-Jan to late-Feb
$699 for all live sessions, lecture notes, and problem sets in 2024-25
8:30-10:00 PM ET on Friday (tentative)
DChO Class Calendar - SY 2024-25
Sign up for Dr. Chen's Open Class for USNCO 2025
Free – No cost to join! Get expert guidance to excel in the USNCO 2025 Local and National Exams.
Exam-Focused Approach – Detailed explanations and summaries of recent USNCO exams, including key concepts, problem-solving strategies, and extensions beyond the test.
Targeted Practice & Insights – Strengthen your understanding of advanced chemistry concepts while addressing common misconceptions in USNCO.
Interactive Learning – Engage in discussions, ask questions, and gain deeper insights into challenging topics.