Justin is among the first generation of autistic youths who have benefited throughout childhood from more effective therapies and hard-won educational opportunities. And Ms. Stanton-Paule’s program here is based on the somewhat radical premise that with intensive coaching in the workplace and community — and some stretching by others to include them — students like Justin can achieve a level of lifelong independence that has eluded their predecessors. “There’s a prevailing philosophy that certain people can never function in the community,” Ms. Stanton-Paule told skeptics. “I just don’t think that’s true.”