We also built a similar map while in high school in the late 2000s, no one really complained (keep in mind I'm not from the US). Some of our teachers quite liked it though. We just viewed it as a familiar location (albeit with secret tunnels, lifts and higher ceilings), it had no particular negative connotations.
I was in high school in 2001 when Counter Strike exploded in popularity in Spain. We also discussed to make a map of our high school, one teacher even got us the floorplans! Mind you, this was one year after a guy killed all his family with a katana and the media blamed it on games. Still, nobody thought we were criminals. The benefits of living in a mostly peaceful country I guess...
I still have it, you can view some screenshots and download the bsp here: https://gzalo.com/en/projects/cs_electronicaort/