LOS ANGELES — The Los Angeles County Board of Supervisors voted unanimously Tuesday to adopt an ambitious plan to divert thousands of the county’s youth away from the juvenile and criminal justice systems, connecting them instead to a comprehensive array of supportive services.

Speakers stepped to the microphones to declare their ardent support for the 78-page report, “A Roadmap for Advancing Youth Diversion in LA County,” which provided the framework for the sweeping strategy proposed.

“This is an historic day in the history of justice reform,” Dr. Robert Ross told the board. Ross is president and CEO of The California Endowment, one of the largest foundations in the U.S.

“We know that 80 percent of the youth now being arrested in the county could be diverted to community-based services if the plan is realized,” he said. The county could “lead the nation.”

The report said that 13,665 arrests and citations were issued to the county’s young in 2015, according to the Department of Justice Statistics. And approximately 11,000 of those 2015 arrests — “including status offenses, misdemeanors, and low-level felonies” — would have been legally eligible for diversion in lieu of arrest or citation under the California Welfare and Institutions Code, had the proposed program been up and running.

Ross also told the board that the Endowment had been supporting restorative justice and diversion programs in California communities such as Long Beach, San Diego and Oakland. And they had promising preliminary data, he said, particularly from Oakland.

In the course of these programs, “young people come face-to-face with the people they have harmed,” and then make a plan for “making it right with the folks they’ve harmed,” he said, plus get health services that address many of the their needs. The programs are “proven to work better than incarceration and cost considerably less,” he said.

Another enthusiastic speaker was Michael Nash, the former presiding judge of the Juvenile Court, now the director of the county’s Office of Child Protection.

As a judge, he’d long been supportive of youth diversion, Nash said. And now he was “very concerned” by the numbers of youth crossing over from the child welfare system to the juvenile justice system. “But this program,” he said, will help ensure that foster youth “have equal access” to the advantages and services of diversion.

Several of the speakers described the 18-month process of designing the proposed new strategy as an unusually inclusive one, involving law enforcement leaders, local judges, county officials, health experts, community advocates and young people who had themselves been incarcerated.

The point was emphasized by Kim McGill of the Youth Justice Coalition (YJC) who, with her young colleagues, had come before the board many times, often to protest a vote, such as previous motions having to do with plans to expand the county’s jail system.

But on Tuesday, McGill talked of the honor she and other YJC members felt to be “a part of the youth diversion work group,” and how they “fully support” the plan moving forward.

She also highlighted some additional areas of focus her group thought “should be robustly included in the implementation.” They believe it is essential to protect youth from the “databases that track arrests.” This was mentioned in the report, she said, but it would require oversight.

Another of McGill’s concerns had to do with California’s Senate Bill 395, which was signed by Gov. Jerry Brown in October. The new law guarantees that every young person of age 15 or under will speak to a lawyer before being interrogated by law enforcement. She stressed the necessity of including LA’s Public Defender’s Office and the Alternate Public Defender’s Office as “key partners moving forward,” so that “even young people who are being diverted have an opportunity to speak to counsel.”

Jessica Ellis, the director of Centinela Youth Services, was also on the subcommittee that created the diversion program-to-be. She told the board how “critical” it was to have “system-involved youth” continue to be part of the “implementation phases” of the project. Centinela Youth Service has partnered since 2013 with the Los Angeles Police Department on a successful restorative justice diversion program, which has frequently been cited as evidence that the newly presented countywide strategy is on the right track.

Peter Espinoza, the director of the county’s Office of Diversion and Reentry, had some suggestions along with his praise: the wish that “our menu of services is robust and diverse” and would include “a very serious focus on education and job readiness.” Most of the work he previously did as Superior Court judge, he added, “was aimed at the intersection of educational failure and justice system involvement.” The new diversion

When it was time for the five board members to vote, Supervisor Mark Ridley-Thomas, the board’s chairman, asked the board’s executive officer to record a unanimous vote.

“Giving youth access to supportive services as an alternative to arrest and incarceration is both morally imperative and fiscally responsible,” he said later, after the vote was finished.

Motion co-author Janice Hahn agreed: “The best juvenile system is one that keeps kids out of it in the first place.”

This story was written for WitnessLA.

The California Endowment funds coverage in California for Youth Today and the Juvenile Justice Information Exchange.