The old Murray Bridge Lutheran School on Owl Drive has outgrown both its original name and its first campus since 1978.
But the fond memories of hundreds of students and staff, past and present, brought many of them back to Unity College for a 40th anniversary celebration on Sunday.
The exact anniversary of the school’s opening had passed a few weeks prior; instead, organisers chose the Christian celebration of Pentecost as the right day for a church service, shared lunch, the planting of 40 trees and the launch of a history book, "This Is Our Story So Far".
Before a crowd of about 200, the worship band pulled out "Walkin' Down the Road", an old Robin Mann song, alongside more recent staples.
Australian Lutheran College principal James Winderlich preached about secrecy, fences and the other barriers that kept people apart, and the ways in which God brought them down.
Prayers were offered by Lynette Schiller, for Lutheran Education; student Kalder Bormann; staff member Sue Kuchel; old scholar Cathy Miegel and former principal Neville Grieger; and thanks given for the school, the opportunities it provided, the congregations and communities which supported it, and for God's guidance to each.
Principal Kaye Mathwin-Cox said she had experienced an "incredible feeling" when she came to Unity, a sense of God's will being done.
She expressed confidence that God had plans for the present generation at the school, just as his plans for the founding generation had borne fruit.