New - Module 2 of Level 2, 3, & 4 Class for USNCO 2026 is Open for Signup!
Overview of Dr. Chen's USNCO Mentorship Program in 2025-26
Join Module 2 Live Classes for Levels 2, 3, and 4
Level 2 (Module 2)
Level 2 (Module 2)
Level 2 (Module 2)
for motivated students taking AP Chemistry concurrently in the fall to prepare for Local 2026 (diagnostic test or email chen@dcho.us for consultation)
covers Thermochemistry, Kinetics, Chemical Equilibrium, Acids-Bases, Buffer and Titrations, and Solubility Equilibrium in the level beyond AP
8:30-10 PM ET on Saturday
8 weekly sessions, mid-Oct to mid-Dec
first session on Oct 18
$399 for all live sessions, lecture notes, and problem sets in 2025-26
Detailed Introduction to L2M2 Class in 2025-26
Recording of L2M2 First Session in 2024-25
Level 3 (Module 2)
Level 2 (Module 2)
Level 2 (Module 2)
for students who scored 35+ in Local 2025 or 4/5 in AP Exam to prepare for National 2026 (diagnostic test or email chen@dcho.us for consultation)
covers Advanced topics in Kinetics, Equilibrium, Electrochemistry and Thermodynamics in the level of National Part I Exam
8:30-10 PM ET on Sunday
8 weekly sessions, late-Oct to mid-Dec
first session on Oct 19
$449 for all live sessions, lecture notes, and problem sets in 2025-26
Detailed Introduction to L3M2 Class in 2025-26
Recording of L3M2 First Session in 2024-25
Level 4 (Module 2)
Level 2 (Module 2)
Level 4 (Module 2)
for students who scored 35+ in the 2025 National, aiming for Honor/High Honor/Camp. (diagnostic test or email chen@dcho.us for consultation)
covers Advanced topics in Kinetics, Equilibrium, Electrochemistry and Thermodynamics in the level of National Part II Exam and beyond
8:30-10 PM ET on Friday
8 weekly sessions, late-Oct to mid-Dec
first session on Oct 17
$499 for all live sessions, lecture notes, and problem sets in 2025-26
Detailed Introduction to L4M2 Class in 2025-26
Recording of L4M2 First Session in 2024-25
Get Recorded Module 1 Classes for Levels 2, 3, and 4
Level 2 (Module 1)
Level 2 (Module 1)
Level 2 (Module 1)
for motivated students taking AP Chemistry concurrently in the fall to prepare for Local 2026 (diagnostic test or email chen@dcho.us for consultation)
covers Stoichiometry, Atomic Structures, Periodicity, Molecular Structures, Bonding, IMFs, Gases in the level beyond AP
8:30-10 PM ET on Saturday
8 weekly sessions, late-Aug to mid-Oct
first session on Aug 23
$299 for all recorded sessions, lecture notes, and problem sets in 2025-26
Level 3 (Module 1)
Level 2 (Module 1)
Level 2 (Module 1)
for students who scored 35+ in Local 2025 or 4/5 in AP Exam to prepare for National 2026 (diagnostic test or email chen@dcho.us for consultation)
covers Advanced topics in Periodicity & Bonding, Coordination Chemistry, Reactions, etc. in the level of National Part I Exam
8:30-10 PM ET on Sunday
8 weekly sessions, late-Aug to mid-Oct
first session on Aug 24
$349 for all recorded sessions, lecture notes, and problem sets in 2025-26
Level 4 (Module 1)
Level 2 (Module 1)
Level 4 (Module 1)
for students who scored 35+ in the 2025 National, aiming for Honor/High Honor/Camp. (diagnostic test or email chen@dcho.us for consultation)
covers Advanced Reactions, Coordination Chemistry, Analytical Chemistry, etc. in the level of National Part II Exam and beyond
8:30-10 PM ET on Friday
8 weekly sessions, late-Aug to mid-Oct
first session on Aug 22
$399 for all live recorded, lecture notes, and problem sets in 2025-26
DChO Alumni Winning at the USNCO National 2025!
Dr. Chen Coached 4 Campers, 7 High Honor, & 11 Honor in 2025
Congratulations to Alex D, Jonathan H, Hyunjun K, Vishnu M on advancing to Camp, to Jai D, Tintin D, Carson G, Philip K, Rohan V, Forest Y, Zhijia Z on winning High Honor (Top 50), and to Daniel C, Justin D, David G, Kevin H, Ayden H*, Clare L, Celina L, Margaret L, Emma L, Sanjay O, Lishan P on winning Honor (Top190)
Class Materials Prepared by Dr. Chen
