Not trollin, but honestly is it illegal to fake a medical clearance form?

It's so stupid. I lightly injured my toe and had to lay off cheer and PE for a while. Now it's the end of the year, and I missed my PE final which is worth 10% of my grade, and my cheer coach won't let me practice until I get a medical clearance note. Which by the way takes ages to set up an appointment for (minimum of 2 weeks) and school ends in 4 days, while cheer camp is in 9 days, and mandatory cheer practices to learn the dance in-I'm invalid for. Please help. The form is so simple to recreate, an elementary kid can do it. Is it illegal? Should I just do it? Or should I go to urgent care to get it signed even though I'm not hurt? I feel like that's taking away from other injured people who really need the help.