The life sized models will be used during assemblies over the coming weeks, based on the theme of shepherds.
Pupils are being encouraged to decorate the sheep in a style that says something about their school's identity and characteristics.
Once decorated, the sheep will be taken to Portsmouth and Winchester Cathedrals in July for Leavers' Services, which are held each year for Year 6 pupils moving on to secondary school. The sheep can then return to individual schools and will continue to be used.
Jeff Williams, director of education for Portsmouth and Winchester's C of E dioceses, said: "We're really excited about Ewe Matter and I've been so pleased by how enthusiastically students and teachers across the diocese have embraced it.
"These sheep will act as visual aids in the classroom and will provide impetus for students to think about what makes their community great, and what they can learn from people from other generations".