Well, I had access to all of those. I did not work in a rich district, either. Sure, MA has more acronyms than anywhere for all of those services! Here, it's special needs and we have various types of teachers, called various things. Our aides are called assistants or paraprofessionals. I think this started when the word "aides" had other connotations. I don't have an issue with that. When I moved here and was interviewing (I was still a spec. ed. teacher then), someone asked me what my "prototypes" were. I was like, huh? I figured out it just meant what was my caseload...
What I really meant by saying that having access to other adults like I mentioned above, is that the #1 thing that alleviates teacher stress and burnout is collaboration with other adults. I am not saying this as a pie in the sky academic. I taught for 31 years and I know this is true.
One thing that saved me is that I was a middle school teacher for most of those years. Middle school teachers work in teams. We eat together and have a team meeting time together to discuss issues and plan things. Yes, I was very lucky at my last school that this team time was in addition to my prep period. But even when our planning time was the same as our prep time, there was still a brief time we could talk. Elementary and high school teachers are extremely isolated. This leads to a culture of distrust in most places. I have worked in all 3 settings and the differences are quite amazing.
In my last school we shared our school psych. with the HS. But, we had 2 school counselors for 450 kids. Every team had a special ed. (inclusion) teacher and 1-2 assistants. One team was attached to the resource room, with more severely disabled kids. We also had a more separate program for PDD/ behavior disordered kids. A few of those came to my LA classes with a 1:1 assistant. Before that, I worked in a 1-5 school in a different district. We had our own school psych and 2 inclusion teachers, who each worked with 2 grades. Each grade had 2 assistants.
I think this just shows how much schools vary from place to place. I really feel for you all. Just having difficult kids is bad enough, but not having the support to deal with them is not fair.