St Joseph's Primary has taken away the 2020 Roger O'Sullivan Memorial Award for Family, School and Community Partnerships for Learning.

Plus a cool $4000 prize to sweeten the deal, chosen from all state Catholic schools.

Their sheep manure business and their school garden project, established in 2016, were the fertilizer needed to watch community collaboration combine brilliantly with educational engagement.

Their 'business' operates with a student 'CEO', and under the guidance of a teacher's aide, liaise with their customers and organise collection and delivery of bags of manure.

All profits are then donated back to the school, which is how the Snack Patch garden came to life.

The garden lets students pick and eat healthy snacks like strawberries, snow peas and beans during breaks and to take home for their family.

St Joseph's teacher Mary Hull said the sheep manure business has been a valuable learning tool.

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"It connects the participating students to the community, the students have learnt how to express themselves in phone calls, conversations and letters of thanks.

Most of all, it has contributed to their self-esteem and value of self worth in being able to delve into a real life project," she enthused.

Executive Director Council of Catholic School Parents NSW/ACT Peter Grace awarded them the trophy earlier this week.