and welcome back to our teacher town hall here at the beautiful new york public library. reminder, one more time, you can participate online on twitter, facebook, or educationnation.com. for this next half hour, we want to talk about something all teachers agree they need. wi it already came up this morning. teamwork that goes beyond the schoolhouse doors. more and more teachers are leading the charge to form networks with important players outside the school system out of necessity in so many occasions. in families, communities, local governments, despite all the challenges, there is some good news to report this year. for example, the latest numbers of high school graduation rates show that 75% of american high school students are indeed graduating on time.