He was a 3rd grader in 2009, and a 6th grader 2011-2012.

来源: 于 2012-07-11 08:46:33 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次
The past year was his first time to participate in MATHCOUNTS, which is for 6th-8th graders.