5 Common Mistakes First-Year Teachers Make — and How to Avoid Them

I had meticulous lesson plans as a first-year teacher — every day planned to the last detail. I knew exactly what we would cover, when, and how.  

The problem? We rarely made it through my plans in the allotted time. My plans were too complicated, and I was too inflexible. One day’s lessons would bleed into the next, and by the end of the year, the ripple effect was so bad we didn’t make it through the curriculum.  

I felt frustrated and defeated, like maybe I wasn’t cut out for teaching. But the reality is, teaching is hard! I made lots of mistakes as a first-year teacher, and you will, too, but education is not about perfection. It’s about growth, learning from your mistakes, and doing better next time.  

Below are 5 common mistakes first-year teachers make (and how to avoid them). If you find yourself struggling in one of these areas, know you are not alone. Nobody is perfect on day 1, but I hope this post can encourage you and help you avoid some common missteps. I’m rooting for you!

Mistake #1: Skipping Formative Assessments 

Formative assessments are a quick check with your students to see where they stand on a particular topic or concept. It could be a quick poll, an ungraded quiz, or just having them indicate with a raised hand, fist to five fingers, how comfortable they feel. 

I was not using formative assessments in my first year, and that meant I was teaching lessons without a clear understanding of my students’ existing knowledge and where they needed support. As a result, I found myself re-teaching concepts my students already understood and/or moving on too quickly from topics they didn’t fully grasp.  

Solution: Before you dive into a new concept, take 5 minutes to assess where your students stand. Before you move on, reassess to ensure your class is ready.

Mistake #2: Being too Rigid  

My inflexible lesson plans are a good example of this common mistake. I was ambitious — I wanted to plan comprehensive lessons that would engage and enlighten my students — but I failed to adjust when we got off track. My plans were also unrealistic for the amount of time we had, and I struggled with pacing.  

This mistake led to some frustration and tears, but looking back, it taught me valuable lessons about how to balance being thorough with being practical.  

Solution: Think of your classroom plans as your starting point. Re-evaluate often and adjust as needed. Prioritize key concepts with your students, and don’t sweat the small stuff.

Mistake #3: Saying ‘Yes’ to Everything 

As a first-year teacher, you’re full of energy and eager to make a good impression with colleagues, administrators, students, and families. That passion is great, but don’t let it trap you into saying yes to every opportunity. Want to plan a school field trip? Yes! Want to coach girls’ basketball? Yes! Want to run the debate team, organize the mock trial, host a community forum? Yes, yes, yes!  

If you say yes to everything, you’ll quickly find yourself spread too thin. You’ll be working late every night but still falling behind. It’s a recipe for teacher burnout.  

Solution: Carefully consider each opportunity. Say yes to what makes sense for you and politely decline the rest. If you need help setting those boundaries without feeling guilty, this blog post has some ideas.

Mistake #4: Wavering on Classroom Management 

Classroom management is one of the toughest aspects of teaching. You’ll improve and refine your classroom-management skills throughout your career, but in your first year, your main goal should be consistency. 

My Moreland University colleague Alyssa Meyers remembers struggling in her first year with asserting her authority. She was fresh out of college and only a few years older than some of her students, and she had to remind herself that she was the teacher and she was in charge.  

Now, this doesn’t mean you have to rule your class like a dictator and never crack a smile. But you do need to set clear guidelines and procedures. 

Solution: Set clear rules and stick to them. Even if it seems like they want the opposite, students benefit from structure.

Mistake #5: Forgetting the Big Picture 

My main encouragement for first-year teachers is to remember why you took this job. You’re educating students and supporting schools, families, and entire communities. You’re changing lives, and I truly believe there is no better or more important job.  

So if you have a bad day, if you make a “rookie” mistake, remember that big-picture truth. Shake off the error, learn from it, and try again.

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Want more tips and advice for first-year teachers?  Download our First-Year Teacher’s Guide to Success. You’ll learn:  

• How to build strong relationships with peers, colleagues, and parents
• Effective classroom management techniques
• Tips for lesson planning, grading, and classroom materials to keep everything running smoothly
• How and when to use technology and AI to enhance learning
• Proven self-care and reflection methods
• How to find professional development opportunities
• And more!