Your First Day as a Substitute Teacher: What to Expect (and How to Survive It)

You’ve got your coffee, your comfy shoes, and your best “I’ve got this” smile. It’s your first day as a substitute teacher — exciting, nerve-wracking, and a little unpredictable (okay, a lot unpredictable). Don’t worry — every great sub has stood right where you are, wondering how the day will go. With a little prep and the right mindset, you’ll be ready for just about anything a classroom can throw your way.

First things first — arrive early. Even ten extra minutes can make all the difference. Use that time to check in with the office, find your classroom, and (hopefully) locate the lesson plan. If there isn’t one, don’t panic — it happens more often than you’d think. Keep a few backup activities in your “sub bag” — think short writing prompts, team-building games, or quick math challenges. A well-prepared sub looks like a superhero when plans go missing.

Then, get to know the class quickly — and not just names (though bonus points if you learn them). Every class has its own rhythm, and students can sense when a teacher takes genuine interest. A quick smile, a bit of humor, and clear expectations go a long way. Remember, confidence doesn’t mean you have to know everything — it means staying calm even when the projector doesn’t turn on or the pencils mysteriously vanish.

Keep your eyes open for the unexpected — the “helpful” student who might test your limits, the copier that jams five minutes before class starts, or the one kid who knows exactly how to push every button. Laugh it off when you can, stay firm when needed, and know that perfection isn’t the goal — presence is.

By the end of the day, you’ll have survived your first round of classroom chaos and probably have a story or two to tell. The truth is, substitute teaching isn’t just about filling in — it’s about stepping up. Every day brings something new, and every class you meet gives you a chance to make an impact, even if it’s just for a day.

Ready to walk into your first classroom with confidence?

Certified Sub’s online training gives you the tools, strategies, and calm confidence every great substitute needs to succeed — from your first day to your hundredth.