[null and void]

"...students say teachers stopped their calls to 911.... Multiple 911 calls went out from Martinsville High School."

Let's get beyond emotionalism and seek the truth of the matter.

The teacher failed in his/her mission to stop all cell phone use?

[Socratic]

...teachers stopped their calls...

Oh yes, a cabal of evil, totalitarian teachers in the midst of a student choking to death, collectively stopped the united efforts of all those other students to call for help. Sniff, sniff. Smell test in progress.