Now celebrating its 10th birthday, its current population of 650 students from kindergarten to year 12 and 100 staff is a far cry from the original 93 students to year 7 and 12 staff members.

Eight of its original kindergarten students still attend the school.

Now in year 10, Sean Rozendaal said starting in the early years meant the students got to know a lot of people.

"It's a family environment because we all get along better," he said.

Pastoral care co-ordinator and teacher Jodie Liddiard remembered early sports activities were run on the school's current turning circle in the car park.

"Our first representative swimming team - we had one two-man tent and we could fit the entire team," she said.

Ms Liddiard said the school grew further down the hill as it expanded, including science labs, drama rooms and a multi-purpose hall, with construction on a new music centre to start later in the year.

"I'm expecting my office to be in a railway carriage soon," she said.

Celebrations started last week - the whole school sang Happy Birthday and students received a cupcake with the school's logo.

Events co-ordinator Nicky Goodyer said more events would follow, including a re-introduction of hot cross buns at Easter for current students and an alumni dinner at The Pavilion Kiama.

The school's regular public speaking events and other activities will also have a celebration theme.

Funds raised from the activities will go towards the school's birthday present: instruments for the music centre.

All former year 12 students are invited to the alumni dinner. To book, contact the school on 4297 6029.