"Part of the drive for us was that we have always said we are a family school."
Any preconceived negative notions about girls starting at the school had not materialised, with most having a brother at the school, or older brothers who had attended and gone on to Wanganui Collegiate.
The 10 Year 8, 10 Year 7, and six Year 6 girls had exceeded the 15 places the school had budgeted for, Mr Gay said.
"To have 10 girls come for the one year [Year 8], is outstanding."
The planning for the 2014 intake started two years ago, with a $600,000 renovation and earthquake strengthening of the old dormitory building.
Of the 26 new female students, 12 are boarders in the new Sherriff House dormitory, although it can take 20.
The Year 8 girls the Chronicle spoke to each said how they liked the idea of boarding, with Sophie Ward saying it was to be a "year-long sleepover".
The boarding house is named after former headmaster Spratt Sherriff, who allowed his daughters to attend Huntley in the 1950s. However, enrolment was not open to any other girls.
A great-great niece, Lily Sherriff is one of the new students this year.
In 2012, Mr Gay went to England to see how schools had adapted to going co-ed.
Huntley had also looked at Wanganui Collegiate's co-ed success, he said.