Santa Fe High School witnessed a black Friday when one of its students, 17-year-old Dimitrios Pagourtzis opened fire.
Ten people were killed, and 10 others were wounded. Many of those who perished, the authorities said, were students.
None of the victims had been formally identified by the authorities by Saturday morning, but relatives and associates have begun to share the stories of some of those who died.
The family of Shana Fisher, a student at Santa Fe High School, announced that she did not survive the shooting.
Shana was in the art room at the time of the attack, her aunt, Candi Thurman, wrote on Twitter.
Shana’s mother told the Houston Chronicle that Shana was shy and sweet, had just turned 16 and was devoted to her dog, Kallie.
Family and friends called Angelique Ramirez compassionate and funny, a loving older sister with a contagious smile.
Her aunt, Sylvia Pritchett, announced her death.
“With a broken heart and a soul that just can’t process all this right now, I have to announce my niece was one of the fatalities,” she wrote in a Facebook post. “Please keep all the families in your thoughts, and hug your children tightly.”
On the Pakistani Embassy in Washington’s Facebook page, Pakistan’s ambassador to the United States expressed condolences for the victims. Among them, he said, was a Pakistani exchange student at the school named Sabika Sheikh.
“Our thoughts and prayers are with Sabika’s family and friends,” the ambassador, Aizaz Ahmad Chaudhry, said.
U.S. officials said Sabika had been part of a State Department-sponsored program for exchange students, the Kennedy-Lugar Youth Exchange and Study (YES) program. A State Department official said the department extended its deepest condolences to Sabika’s family and friends, and that David Hale, the ambassador to Pakistan, was reaching out to her family.
“As an exchange student, Sabika was a youth ambassador, a bridge between our peoples and cultures,” Mr. Hale said on Facebook on Saturday. “All of us at the U.S. Mission in Pakistan are devastated by and mourn her loss. We will honor her memory.”
Cynthia Tisdale was killed in the shooting, her brother-in-law, John Tisdale, announced on Facebook. Her family said she was a teacher.
Mr. Tisdale asked his friends to pray for Ms. Tisdale’s husband, Rev. William Recie Tisdale, and their children.
Ms. Tisdale was a member of Anchor Bible Baptist Church in Pharr, Tex., he said.
“We never know when our death will come,” he wrote. “Cynthia planned on one day retiring and being a full-time grandmother. It will never happen.”
Rhonda Hart wrote on Facebook that her daughter, Kimberly Vaughan, was one of the victims, a student in first-period art class.
She hashtagged her message with #fightforkim and #oneof10.
“Folks — call your damn senators. Call your congressmen,” she wrote. “We need GUN CONTROL. WE NEED TO PROTECT OUR KIDS.”