Israel does not arm teachers. They do have security guards, and fenced in schools . If you would like to implement Israeli style gun control in the USA, I'm on your side. If you want to post discredited photos to support an insane idea, you are on the right site.
BTW:
“Unlike in the United States, where the right to bear arms is guaranteed in the Constitution’s Second Amendment, Israel’s department of public security considers gun ownership a privilege, not a right. Gun owners in Israel are limited to owning one pistol, and must undergo extensive mental and physical tests before they can receive a weapon, and gun owners are limited to 50 rounds of ammunition per year.” (jta.org)
BTW:
“Unlike in the United States, where the right to bear arms is guaranteed in the Constitution’s Second Amendment, Israel’s department of public security considers gun ownership a privilege, not a right. Gun owners in Israel are limited to owning one pistol, and must undergo extensive mental and physical tests before they can receive a weapon, and gun owners are limited to 50 rounds of ammunition per year.” (jta.org)