This is brilliant. When I was in sixth-form, a friend built a portable case containing a micro-ATX motherboard. No battery, but he could sit down at any of the school computers, plug into the wall, and use its peripherals with his PC. That was more than 25 years ago, I feel old now.
For the non-Brits, "sixth-form" means years 12 and 13 of school - equivalent to junior and senior years of high school in the US. The first and second yearsof sixth form are referred to as "lower sixth" and "upper sixth" respectively. It's a hold-over term from when secondary education (ages 11 and up) started in "first form" and worked up.
That's arguably a better system since you can keep adding earlier and earlier years (mandatory school starting age has drifted from 11 to 6 to 3 over the years) while keeping everything consistent.
Unfortunately they messed it up in 1959 by renaming 12th to 7th and giving matching names to the new 13th/14th.