|High School:||Capital HS ’10|
2010-11 – Arakawa made a quick impression as a freshman, with a season-high discus throw of 156-2 at the Duane Hartman Invitational. In the hammer throw, Arakawa hit a mark of 196-3, which was good for his season-high. Both marks were team-highs.
High School - Arakawa was a standout in the discus and hammer throw his senior year, placing third at the State 3A Championships in both events. He placed second in the hammer at the 2010 USATF National Junior Track and Field Championships with a throw of 213-07. His personal best in the discus is 172-9 and 218-3 in the hammer.