The challenges that boys face in school can be traced back as early as prekindergarten. A 2005 Yale University report showed that nationally, boys are 4.5 times more likely than girls to be expelled from prekindergarten programs. Also noteworthy in this study is the observation that “The increased likelihood of boys to be expelled over girls was similar across all ethnicities, except for AfricanAmericans, where boys accounted for 91.4% of the expulsions.”

Prekindergarteners Left Behind: Expulsion Rates in State Prekindergarten Systems.
Walter S. Gilliam, PhD, Yale University Child Study Center.
May 2005 Report.