Skool Daze is a computer game created by David Reidy (whose wife Helen was a school teacher at the time) for the ZX Spectrum and released by Microsphere in 1985. A Commodore 64 port was subsequently made. It is one of the Spectrum's best-loved games. The game was hailed for breaking many of the gaming moulds by pursuing a creative route of a childhood experience at school.
The game was followed by Back to Skool, which expanded the gameplay to include a neighbouring girls' school and a love interest (with the benefit of being able to reduce one's lines), along with stink bombs, mice, water pistols, frogs, sherry and a long-suffering caretaker. An unofficial remake is Klass of '99, a PC edition of Skool Daze with updated graphics and various changes to the gameplay.
Source: Wikipedia, "Skool Daze," available under the CC-BY-SA License.