Sentencing proceedings began today for the younger of two boys who admittedly dropped a shopping cart onto a philanthropist in Harlem — and he, too, has longstanding issues of neglect and violent behavior, a Manhattan Family Court judge said.

Raymond Hernandez, 12, at one time pushed his own school principal, Judge Susan Larabee said, reading in court from the boy’s records.

Hernandez has had six suspensions in his school history, for “taking property, physical altercations, slurs, coercion, threats, horseplay, shoving and pushing, [and] physical altercations,” she said.

“Apparently nobody knew he was at the mall on the day in question,” the judge said.

Sentencing proceedings are scheduled to continue on and off throughout the month for Hernandez and his co-defendant, Jiovanni Rosario.

Both boys have pleaded guilty to assault in the second degree for hurling a shopping cart over the fourth-floor railing of a Harlem shopping mall on Oct. 30. At a sentencing hearing yesterday, officials said that Rosario has struck his mother’s cat and tried to run over other kids with his bike — and that both boys laughed and joked in custody after the vicious prank.

The plummeting cart struck Marion Hedges, who had been at the mall buying Halloween candy in bulk for disadvantaged children.

A lawyer for one of the boys has told The Post that prosecutors have told him Hedges is in rehabilitation for severe head injuries, and has had to relearn her name and basic functions.

Larabee can give them as little as probation and as much as placing them in juvenile jails until their 18th birthdays.