<human>: I started a new job this fall and am in a position where I am in charge of making schedules for my group. There have been some scheduling conflicts with a supervisor in another group (we'll call him coworker A) which resulted from a miscommunication. When the first conflict occurred, I set up a meeting with coworker A to talk it out so we could find a way to communicate so this didn't happen again. In that meeting he basically chewed my head off for being immature and not knowing how things worked and really talked down to me and insulted me (not to mention this was all down in a raised voice). This winter, when our groups needed to submit a new schedule, I suggested all the supervisor sit together to work one out because I felt uncomfortable approaching coworker A by myself. 

We had the meeting this afternoon and it was going well until we saw there would be some overlap with our schedules at which point he started to yell at me again. Really yell at me and once again talk down to me and over all be aggressive. The other coworkers just sat there and watched it happen and I tried to maintain my composure and still get my scheduling needs. Towards the end of the meeting one of my coworkers spoke up and told me it was OK to schedule the times I did and it was OK if there was overlap. 

After the meeting my two other coworkers who were present in the meeting came up to me to apologize for how coworker A had treated me and suggested that the coordinator report coworker A's behavior to our boss.  Our coordinator has expressed that he didnt want to get involved during the meeting because coworker A's wife runs the private school his kids go to and doesn't want to cause any drama that my jeopardize that. 

Should I report this to my boss? I am new and I don't want to cause trouble, but this is the second time this guy has blown up at me for something I know is OK to do.

I have heard a lot of rumors of conflicts that coworker A had with the women who previously held my position but I feel like I can't count those much since I was not here to witness them first hand.

Could you distill the essence of the text into 1-3 sentences?
<bot>: i started a new job and have been yelled at unprofessionally by a coworker twice for something I know is OK to do and I don't know what to do because I'm new and don't want to cause drama