Perhaps this is approximately true if you focus exclusively on mass shootings at schools. But shootings overall are one of the leading causes of deaths for children in the US.
See for instance the CDC's visualizations on causes of death per age group [1]. In 2020, 476 children aged 10-14 died in traffic accidents involving motor vehicles. 218 children aged 10-14 were killed in homicides by firearms.
Those two numbers are very much in the same order of magnitude. This is also the case in prior, non-Covid years.
Any stats on legal vs illegal guns killing children?
Curious as to whether criminals being unable to purchase firearms legally has done anything to stop them from getting ahold of firearms and committing shootings.
See for instance the CDC's visualizations on causes of death per age group [1]. In 2020, 476 children aged 10-14 died in traffic accidents involving motor vehicles. 218 children aged 10-14 were killed in homicides by firearms.
Those two numbers are very much in the same order of magnitude. This is also the case in prior, non-Covid years.
[1] https://wisqars.cdc.gov/data/lcd/home