printing a sheet for a specific class? or the whole lot?

Hi everyone,

thank you for taking the time to read my post, I would like to print my tracker for a particular class or if necessary the whole group , but don't know a quick way of doing this unless i select each one individually. I would be grateful to anyone with any suggestions and solutions.

Cell c6 has a data validation where a pupil is chosen and their data is shown with a graph.

Thank you