If it was me I would press charges to scare that bully straight and show him this is not a game. So sorry your family had to go through this. Life is very hard for young people these days.

Years and years ago my boys were also bullied by a boy two streets over. I called the police and they came and talked to us. The police officer said this kid had been in trouble with the law many times before, he came from a troubled family. This boy never did bother my sons again.
However about 6 years later the boys mom shot his dad 5 times. Apperently the husband beat the wife on a regular basis and one night she found his girlfriends number in his coat pocket so she pulled out a gun and started to shot him. He ran into the neighbors yard and she shot him again.
The poor woman is in jail and the creepy husband lives in the house. She must have had bad aim. If I was going to shot someone and land in jail might as well be for murder at that point.