A complete speaking model
We can reduce paper use by checking whether printing is necessary, reuse clean single-sided sheets for rough work and recycle suitable waste through the school system. Reuse should not expose private marks or names. I suggest a teacher-approved clean-paper box with clear labels. A sheet containing personal information should not be placed in it merely because the back is blank. We could record purchases and reuse over comparable periods, stating the dates and how pages were counted. Until we collect those records, a saving is a hypothesis rather than our result. Some students also need accessible printed information, so reducing waste must not mean refusing an appropriate copy. In my view, prevention is the first step; recycling does not justify unnecessary printing. A useful plan makes the responsible option convenient while explaining its limits.
Follow-up: Would you aim for no printing at all?
Response: No. The aim is to avoid unnecessary use while preserving access and confidentiality.