First Day/Last Day of School

Where did that time go?  One minute I'm sending him off to preschool a couple of days a week and then it's over. 

Here's Joseph the first day of school in August 2011.

Here's my boy last day of school in May 2012

He has grown so much this year and has learned so much.  I just keep wondering what happened to that baby I brought home three years ago!