01 - COACHES
Our Coaches
Our team of dedicated coaches brings a wealth of competition experience and a passion for making math accessible and exciting for every student.
Alex Chen
Alex Chen is a junior at Torrey Pines High School and has
qualified for AIME a nonzero number of times. He's very good
at math. Outside of math, he's hooked on the buzzers. This was
written by Sihu Ahn.
Andrew Jahng
Andrew is a junior at CCA who has been doing math since 1st
grade. He has qualified for AIME four times and received a 3rd
place individual trophy at MathCounts State. Outside of math,
he enjoys playing clarinet, swimming, and hanging out with
friends.
Arhan Gupta
Arhan is a sophomore at Torrey Pines High School. He is a 7x
AIME qualifer(SINCE 3rd grade!!), MATHCOUNTS CDR specialist
(Speed Math), and is a pefect scorer on AMC 8 and AMC 10 (4x
AMC 8, 3x AMC 10). In his free time, he plays water polo for
his high school’s Varsity Team, runs a cooking channel on
YouTube with over 40k subscribers, and takes care of the
elderly.
Brian Su
Brian is a sophomore at Torrey Pines High School. He has
qualified for AIME and represented CVMS at MATHCOUNTS. Outside
of math, he is interested in music, programming, and running.
Chris Chen
Chris is a junior at Torrey Pines High School where he is
president of the math club. He is a 4x AIME qualifier and AMC
10 perfect scorer. He also attended the PROMYS summer program
in 2025. Outside of math, he likes programming robots for his
FRC team and playing the piano.
Dylan Kim
Dylan is a senior at CCA and he has been doing competition
math since middle school. He has qualified for the AIME four
times and achieved DHR on the AMC 12. Besides math, he enjoys
going to symphony concerts and watching the Padres.
Erica Dong
Erica is a senior at Canyon Crest Academy. She is a 3x AIME
qualifer, MATHCOUNTS alum, and has hosted multiple local math
contests. In her free time, Erica likes to rock climb, listen
to music, and try boba shops.
Kathy Xu
Kathy is a junior at Torrey Pines High School. She has
represented CVMS at MATHCOUNTS, and as participated in various
math competitions. Outside of school, she enjoys playing
badminton and drawing.
Kevin Yang
A junior at Canyon Crest Academy, Kevin is a 3x AIME qual and
has produced results at many regional and national
competitions. Kevin likes to swim, work out, and playing the
piano.
Matthew Hsiao
Matthew Hsiao is a sophomore at Torrey Pines High School and
has qualified for AIME a zero number of times. He's not very
good at math. Outside of math, he's hooked on the buzz. This
was not written by Sihu Ahn.
Sepehr Golsefidy
Sepehr is a junior at CCA who has been doing math since 2nd
grade. He has qualified for AIME four times, won MathCounts
Countdown at State, and was part of the Carmel Valley
MathCounts Team twice. In his free time, he plays chess and
holds the National Master title. He also likes playing piano,
running, ping-pong, and listening to music.
Sierra Liu
Sierra is a sophomore at Torrey Pines High School. She enjoys
math, food, music, and learning about languages. Sierra has
participated in the AIME and MATHCOUNTS.
Sihu Ahn
This person worked on technical production for 4 shows in his
middle school and at least 5 in his high school. This theater
kid has attended two HSNCTS and qualified for AIME 3 times.
This regular contributor to PPT and CCAMB is in his third year
of coaching math league. For 10 points, name this 11th grader
at CCA whose name is listed above.
02 - STAFF
Staff and Volunteers
Our math league would not be possible without the support of our staff and parent volunteers. From organizing events to helping with logistics and communication, their contributions make our program stronger every year.
Vikram Gupta
Gokce Dane
Melanie Webb
Adam Bishop
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