Following the popular costumed re-enactment on Tuesday of a typical school day in 1863, about 190 former pupils and staff and contemporary parents attended a registration function in the school hall on Friday night.
Photographs of classes of children from down the years prompted plenty of debate and recollection, especially when they tried to identify the pupils who were unnamed.
''There was a lot of reminiscing, a lot of stories and a lot of catching up,'' event co-ordinator Julie Hughes, of Arrowtown, said yesterday.
A community gala was held on the school grounds and attracted hundreds of children and their families on Saturday.
Youngsters rode weird and wonderful bicycles, ponies and motorised mini-utility vehicles to their hearts' content. Trestle tables groaned with masses of bric-a-brac and home baking.
Photographs were taken of former pupils from each decade, beginning with the two surviving pupils from the 1920s - Alan Reed and Jack Reid - who both still live in the village.
There were 20 former pupils from the 1950s.
Arrowtown School alumni travelled from as far as the United Kingdom and Germany and there were apologies from the United States and South Africa, showing just how far Arrowtown pupils had travelled, Mrs Hughes said.
Young singer-songwriter Holly Arrowsmith, a former pupil, told guests at the evening function in the school hall before performing that she would not have had the confidence to play live on stage without the encouragement of her teacher, Kathleen Brentwood.
The buffet dinner and auction concluded the 150th anniversary celebrations for Arrowtown School. Information gathered from the weekend is destined for a time capsule.
