The students performed two waiata and Stoppard spoke about the progress of the project.
The project team have had two funding applications rejected but are seeking other funding opportunities and are very confident the project will happen.
Te Kāpehu Whetū teacher Morore Piripi said the school has a close affinity with the area.
"We want to be part of everything that's happening around here."
The students will also help with the educational packs which will go with the Obscura once it is complete.
Andrew Herbert, from Harnett Builders who have the contract to build the Obscura, said being in the middle of the human sculpture was cool and quite uniting.