A project is a project. For example, building a house in a construction company is a project. Doing promotional activities in the supermarket is a project. It's usually done by a group of people.

The project in the school is that the teacher assigns a theme and then completes it in groups. This may be like publishing information in a newspaper. It may need a model. It may have pictures and videos. It depends on the nature of the project and the requirements of the teacher.