Oh how I have experienced this! I taught at a school located in a very low socio-economic area of Bakersfield, CA for my first teaching position. There were several other high schools in the district and although they should all have had the same opportunities, they definitely did not. My roommate and I were both high school teachers...I was at X School in the rough neighbourhood and she was at Y School in the affluent, mostly white neighbourhood. I had to buy most of my own classroom supplies out of my pocket, she received a classroom stipend. I had to share desks with the teacher in the classroom next to me, she had extra desks that she didn't even need. I coached a sports team and often had to use the school van to drive students to the games and even drive them home afterward, she helped coach cheer and her students received extra lessons outside of school, parents came to all events and the athletic booster club provided them with track suits, new equipment each year, etc. We were both in public schools in the same district, but had VASTLY differing experiences, as did our students.
This caused some great divides among the students and students from our school often made comments about the affluent schools in the district and how the students had it easy, had more breaks than them, received more opportunities, etc. I'm not sure how that divide could have been overcome and I imagine it is still there, with technology now as another issue that divides them and highlights the inequalities.