I recall upgrading from useless macs, to slighty less useless macs.

I didn't feel the changes were all that significant. My high school was effectively a six year institution (7-12 all in one building), and i don't remember much of anything changing technologically: there was one clean replacement of all PCs at one point, though PCs always used Windows XP from when i entered in Fall 2002 to when i graduated in Spring 2008, and they did start using an online grade reporting system, essentially the teacher's gradebooks all had to be online so parents could see exactly where you were.

Aside from that, not much.

I was in primary school until 2004. There, in the first four years of the 2000s we say an upgrade of the computers to XP and LCD monitors, smartboards become standard in every classroom, a projector in the assembly hall and some minor things.

I was in secondary school from 2004 to 2009, in those years not as much changed. When I started, technology wise it was similar to my primary school. When I left, the computers had been upgraded and a new IT/media room built with Macs with editing software. WiFi was introduced into every room to cover the whole school as well.

I was in 6th form college from 2009 until after the end of the decade. I'm not sure if anything actually happened at all in regards to technology.

Talk about the disadvantages.

e.g. paper register can be taken immediately, electronic has to wait for the computer to boot up, webpage to load, and hope it doesn't crash.

Also in the event of a fire our school receptionist has to print off all the data, presumably while the flames close in.