Green Street Academy is a two-year-old public middle and high school in urban Baltimore, Maryland. One of the school's focuses is to embrace the green eco-sustainability movement and the new career paths it will generate. Like most schools, GSA is designed around extremely high academic standards that capture students' imaginations, stimulate their curiosities and inspire their successes. Unique to our program, though, is that last year we began the process of transforming the entire school to a true project-based learning (PBL) environment by the end of this school year. Here, are some of the transformation experiences -- both positive and negative -- we've had since beginning the shift.