A former Dilworth School music teacher has been jailed for eight years for sexual offending

Now 75, Leonard Cave abused students at the Remuera school and St Paul's Collegiate in Hamilton over a span of five decades.

Jurors in the High Court at Auckland returned guilty verdicts in June for charges of indecent assault, indecency between males, sexual violation, and supplying cannabis and LSD to students.

In all, 12 people associated with Dilworth School have been accused of sexual offending between the 1970s and 2000s.

Three of the accused have died, and another three have been convicted.