Jonathan and his teacher, 53-year-old Karen Elaine Smith, were shot by Smith's estranged husband, 53-year-old Cedric Anderson.
Jonathan and another student, 9-year-old Nolan Brandy, were rushed to an area hospital. Jonathan died before making it to surgery, while the Nolan was reported to be in stable condition after initially described to be in critical condition.
Police said the children shot were not targeted and were likely struck by accident.
The shooting happened in a special needs classroom that included students from grades 1-4. At the time, the room held 15 students, one teacher and two adult aides.
Jonathan's family set up a GoFundMe account for funeral expenses. To donate, visit https://www.gofundme.com/jonathan-our-family-angel-ngeljonathan.
New details about killer
Some six weeks earlier, Anderson was a newlywed calling Smith an "angel" in one of many social media posts professing his love.
San Bernardino police have said nothing of what might have motivated Anderson to open fire.
"No one has come forward to say they saw this coming," police Chief Jarrod Burguan said, though Anderson had a history of weapons, domestic violence and possible drug charges that predated the marriage.
What appears to be his Facebook page features many public declarations of his love for Smith between statements of religious devotion before his last public post on March 15.
"She knows when to ignore me," Anderson said with a laugh in a short video posted Feb. 27. "Well, it makes a happy marriage."
Anderson had posted that he "loved being married to Karen Smith-Anderson!" and posted a photo of the two of them on March 4 in what he described as a date night.
The page also had several photos of his wedding to Smith and their honeymoon among the scenic red rocks of Sedona, Arizona.
But Smith left him about a month and a half after their late-January marriage, police and family members said.
Smith's mother, Irma Sykes, said her daughter had been friends with Anderson for about four years before they got married.
"She thought she had a wonderful husband, but she found out he was not wonderful at all," Sykes told the Los Angeles Times. "He had other motives," Sykes said. "She left him and that's where the trouble began. She broke up with him and he came out with a different personality. She decided she needed to leave him." She did not elaborate further.
Sykes said her daughter was a dedicated teacher who took up the profession about 10 years ago after her four children grew up.
School staffers knew Anderson, who followed the proper protocol and got into the school through the front office by saying he had to drop something off for Smith, school district officials said.
Smith was his target and the two boys were hit as he was firing at her, Police Chief Jarrod Burguan said. He emptied and reloaded the gun before turning it on himself.
There were 15 students in the special needs classroom ranging from first to fourth grade, along with two adult aides, Burguan said.
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