"It's just a shame that it took a lot of money, unnecessary effort and legal argument to get there," Lynne said.
For the couple's daughter, who has Asperger's syndrome, it means she will finish her two years of schooling at Salisbury this year before returning to Wanganui to a mainstream secondary school.
"She'll be 15 when she comes home, and she'll still need a lot of teacher support. But with Salisbury staying open, it means their staff will be able to liaise with the Wanganui school when she starts," Lynne said. "That's a huge relief to us, because the Salisbury staff know our daughter. And it also means not having an outsider involved."
The family had made a contribution to the legal fight funds.
"There's a huge amount of relief this is over, because it's been a very long year," Lynne said.
In a reserved judgment, Justice Robert Dobson said Ms Parata's order to close the school was unlawful because it relied on the possibility of sending some girls to live at Halswell School in Christchurch - a boys' special needs school.
The minister had argued there was no evidence to suggest handicapped adolescent girls would be more vulnerable if moved together with boys but Justice Dobson said that seeing the risks took "no great leap in logic".
Salisbury board chairwoman Helen McDonnell said that the hard work by the board and the school's supporters for over a year had ensured that the minister understood the importance of retaining a single-sex residential option for girls with complex intellectual needs.
"We have been given an assurance from the Education Ministry that the school's actual roll should be approximately 30 students in the latter half of this year, which means we will be a financially viable school.
"We have always been concerned that this year's sinking roll would mean that staying open would not be at all practical. But now we have confidence that we will have a sustainable school for our students," Ms McDonnell said.