The prepared text of President Barack Obama's back-to-school address scheduled for Tuesday, as released in advance by the White House: OBAMA: Hello, everyone — how's everybody doing today? I'm here with students at Wakefield High School in Arlington, Virginia. And we've got students tuning in from all across America, kindergarten through 12th grade. I'm glad you all could join us today. I know that for many of you, today is the first day of school. And for those of you in kindergarten, or starting middle or high school, it's your first day in a new school, so it's understandable if...