'I don't want to go back to school,' says 10-year-old boy who survived Texas shooting by escaping through window

A fourth grader who survived the shooting at an elementary school in Texas (USA) by escaping through a window while his classmates were killed, said he never wants to go back to school because he knows "it could happen again".

At Robb Elementary School in Uvalde (Texas), 18-year-old, Salvador Ramos, opened fire and killed 21 people, including 19 children and two teachers, all in the same fourth grade class.

Jayden Perez, 10, told CNN how his teacher closed the door to his classroom and ordered his students to "hide and be quiet" after hearing repeated gunshots.

Perez began to recount how the events unfolded, as well as the moment he hid with several of his classmates near the backpack area during the attack.

"Five of us hid there and the rest of them under a table, but that did not prevent one of my companions from being wounded," he indicated.

He also narrated how Salvador Ramos started shooting inside his classroom. "He shot through a window, injuring my friend and my teacher," he said.

Perez stated that his friend was shot in the nose, and both he and his teacher had to have surgery.

"It was very scary because I never thought this would happen," he said as he began to list which of the 19 children killed were his friends while looking at his crosses, pausing to say, "Basically all of them."

Jayden recounted that an officer helped him and other students escape through a window and it took 90 minutes before he was reunited with his family, who were terrified the whole time about what might happen.

Added to this testimony is that of Miah Cerrillo, an 11-year-old girl who smeared herself with a friend's blood to fake her death and survive the massacre.

Col. Steven McCraw, director of the Texas Department of Public Safety, acknowledged Friday that "it was the wrong decision" for police officers to wait for nearly an hour outside the school for a specialized tactical team to arrive to neutralize Salvador Ramos.

Someone McCraw did not identify called 911 several times starting at 12:03 p.m. and told police in whispers that there were several dead and that there were still "eight or nine" students alive, the Colonel said. One student called at 12:47 p.m. and asked the operator to "please send the police now."