Bags filled with food were donated to the Open Kitchen Foodshare scheme by pupils from St Edmund Campion Catholic Primary School on Tuesday.
In a special harvest assembly, donations from pupils at the Altwood Road school were displayed on stage along with a 40kg pumpkin, grown by a relative of one of the teachers.
Open Kitchen's Tom O'Kane accepted the donation of the food, enough to fill nearly 40 carrier bags, and gave a talk on the work of the Maidenhead-based charity.
Children from years three and four also gave a presentation about food from around the world and what children eat in poorer countries as part of the school's work with the CAFOD charity.
Teacher Jenny McQuillan said: "We are delighted by how much the children have collected for Open Kitchen and how much the children have learned about the charity."
The foodshare scheme has been launched to help people who are homeless.
Top Ten Articles
The Met Office has issued a yellow alert for Windsor and Maidenhead, Slough and Wokingham, warning that rain moving eastwards across the south of the country may turn to snow in some places.