Judge Rea said the offending, which occurred while Skipper was on prison release conditions, had left the school "completely devastated".
"One can only reflect on the effort that their community made to make sure the school had that equipment.
"You're a former student yourself, your own daughter goes there and close family members are employed at the school ... yet none of that distracted you."
His lawyer, Eric Forster, said the offending would "grate" with most people.
Although some at the kura had lost a year's worth of research, he claimed the offence was not as bad as an intrusion on a residential dwelling, and argued his client had no previous convictions for burglary.
In a statement read in court by defence counsel, Skipper spoke of his unease about meeting with the school: "I can't seem to face them ... I don't know what I'd say to them."
Judge Rea described the incident as "an appalling burglary".
"To see in the probation report that you didn't even have the guts to face the people you did this to, speaks volumes about your character."
Skipper also pleaded guilty to unrelated charges of burglary, unlawfully taking a motor vehicle and breach of bail.
In September 2010 he was sentenced to 20 months in jail for aggravated robbery. He was released in April last year.
Judge Rea yesterday sentenced him to three years and nine months in jail, and imposed a minium non-parole period of two years and four months in prison.
No order for reparation was made because there was "no prospect" of Skipper repaying the money.
The kura's principal, Cordry Huata, said the incident has been "very disappointing for us, but we're coping".
"One teacher had all her Masters research lost. His family members here at the school have found it very difficult because they have to face everyone."
