Chris Read, general manager, aeronautical, unveiled a plaque to commemorate the children's involvement.
School principal Deborah Dickson said the children were delighted to be involved.
"The children love to watch the planes flying overhead at playtime. They were absolutely thrilled to get their hands dirty with the planting and visit [restricted] parts of the airport."
Mr Read said thanks to grass-seeding in the fence's foundation wall, and the final planting effort by RPS pupils, the new 80m fence would be "softened and blended" into the local environment.
The fibreglass fence will divert jet-blast and wind at the end of the western runway, beside Kawarau Rd, as part of an ongoing safety project to meet international aviation requirements.
