Little said some students pushed out of high schools are encouraged to enroll in programs that prepare them to take the GED exam. People who pass that test get certificates indicating they have high-school level academic skills. But the research shows that getting a GED doesn't lead to the kind of job or college success associated with a regular diploma.

Loretta Singletary, 17, enrolled in a GED program after dropping out of a Washington, D.C., high school that she describes as huge, chaotic and violent. "Girls got jumped. Boys got jumped, teachers (were) fighting and hitting students," she said.

She said teachers had low expectations for students, which led to dull classes. "They were teaching me stuff I already knew ... basic nouns, simple adjectives."

Singletary said a subject she loved was science but she wasn't offered it, and complaints to administrators went unanswered. "I was interested in experiments," she said. "I didn't have science in 9th or 10th grade."

A GED classmate of Singletary's is 23-year-old Dontike Miller, who attended and left two D.C. high schools on the dropout factory list. Miller was brought up by a single mother who used drugs, and he says teachers and counselors seemed oblivious to what was going on in his life.

He would have liked for someone to sit him down and say, "'You really need to go to class. We're going to work with you. We're going to help you,"' Miller said. Instead, "I had nobody."

Teachers and administrators at Baltimore Talent Development High School, where 90 percent of kids are on track toward graduating on time, are working hard to make sure students don't have an experience like Miller's.

The school, which sits in the middle of a high-crime, impoverished neighborhood two miles west of downtown Baltimore, was founded by Balfanz and others four years ago as a laboratory for getting kids out on time with a diploma and ready for college.

Teachers, students and administrators at the school know each other well.

"I know teachers that have knocked on people's doors. They want us to succeed," 12th-grader Jasmine Coleman said during a lunchtime chat in the cafeteria.

Fellow senior Victoria Haynes says she likes the way the school organizes teachers in teams of four, with each team of teachers assigned to a group of 75 students. The teachers work across subject areas, meaning English and math teachers, for example, collaborate on lessons and discuss individual students' needs.

"They all concentrate on what's best for us together," Haynes said. "It's very family oriented. We feel really close to them."

Teachers, too, say it works.

"I know the students a lot better, because I know the teachers who teach them," said 10th-grade English teacher Jenni Williams. "Everyone's on the same page, so it's not like you're alone in your mission."