Six sets of twins graduate from Missouri high school

This past weekend, graduation ceremonies were held at many schools, and one of those schools had a distinctive class of graduates.
The high school class 2023 in Purdy, Missouri, will be noteworthy. On Saturday, May 13, six sets of twins crossed the stage to accept their diplomas.
The twins make up one of every five Purdy graduates.
How many students were in your graduating class?