|High School:||East Valley HS '09|
2010-11 – Indoor: As a freshman, Buchanan placed fifth at the Big Sky Conference Championships in the shot put with a throw of 57-4 1/4. At the 2011 Bronco Open, Buchanan had a throw of 52-6 in the weight throw. Outdoor: In the discus thrown, Buchanan had a season-best throw of 149-7. In the hammer throw he reached a mark of 177-5.
2009-10 - Utilized Redshirt season.
High School - Buchanan finished first in the shot put with a mark of 60-1 3/4 at the WIAA 2A Championships and second in this discus with a throw of 159-1. He was first in both the shot put (59-6 1/2) and the discus (160-9) at the CWAC District Meet. As a junior, Buchanan finished first in the shot put with a mark of 55-10 and fourth in the discus with a toss of 152-11 at the State 2A Championships. His career-best throw in the shot put of 59-11 and in the discus of 172-6 came his senior year.