"If you had a teacher who was adept at firearms, that could very well end the attack very quickly", Trump said.
Concealed carry was the subject of the President's morning Twitter missives on Thursday, when he said that he did not support giving all teachers guns but to those with "military or special training experience".
Trump went on to say that schools should become harder targets by no longer being gun-free zones.
The meeting took place a week after the mass tragedy at Marjory Stoneman Douglas High School that left 17 people dead and 14 others injured.
Trump listened to Mr Pollack and the students before discussing the plan to arm teachers.
Trump defended his claim by bringing up Aaron Feis, the football coach who sacrificed his life to save three students during the Parkland school shooting.
The US should keep assault rifles out of the hands of anyone under 21, President Donald Trump has declared, defying his loyal supporters in the National Rifle Association amid America's public reckoning over gun violence. "We're going to do something about this awful situation that's going on", Trump said during the listening session, per CNN.
"A gun-free zone is, let's go in and let's attack", he said.
However, there were many who thought Trump's idea of arming teachers is only making the situation worse. Cowards won't go there...problem solved.
"We are going to be very strong on background checks, and put a very strong emphasis on the mental health of somebody", he said. Bump stocks are a rifle accessory that uses a gun's inherent recoil force to achieve rapid fire similar that of banned automatic weapons.