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It is every parent's dread: your child comes home, drops their bag, and says, "I don't understand anything the physics teacher says."
When a core subject teacher is absent, disengaged, or simply unable to explain the material clearly, the impact on a student is immediate. Teachers are estimated to have two to three times the effect on reading and maths tests of any other school factor, according to the RAND Corporation (RAND). In a subject like physics, where every new chapter builds relentlessly on the last, a missing or weak teacher can quickly turn a few misunderstood concepts into a chronic fear of the subject.
If you find yourself in this situation, you need a two-pronged approach: working with the school to address the immediate problem, and filling the learning gaps at home so your child does not fall behind.
How to talk to the school about a weak teacher?
Your first step is to speak with the school without burning bridges. Schools are complex ecosystems, and going in with accusations ("the teacher is terrible") often triggers a defensive response. Instead, frame the conversation around your child's specific struggles and ask for a collaborative solution.
Contact the head of the science department or the principal, rather than the teacher directly, if you believe the issue is systemic and affecting the whole class. Keep the focus entirely on the learning outcomes.
Ask the school what support systems they have in place. Can your child attend a different section for physics? Does the school offer after-school help or peer tutoring? By asking for their partnership, you make it the school's problem to solve alongside you, rather than a battle between you and the administration.
What can you do at home to fill the gap?
While the school works on their end, you cannot wait for the system to fix itself. You must establish a strong self-study routine at home. Physics requires active problem-solving, not just passive reading.
Find the exact gaps: Sit down with the syllabus and identify exactly where the confusion started. Is it setting up the equation of trajectory of a projectile? Or are they struggling with the fundamental calculus behind variable acceleration? Identifying the root cause is the first step to fixing it.
Shift to active learning: Encourage your child to solve problems rather than just re-reading the textbook. Physics is learned with a pen in hand. When they make a mistake, they should write down *why* they made it, not just copy the correct answer from the back of the book.
Create a structured schedule: When the classroom structure is weak, home structure must be strong. Set aside dedicated time each evening specifically for physics, treating it as an unbreakable appointment.
Use alternative resources: If the school textbook is dense or unhelpful, look for alternative books, video lectures, or study guides that explain concepts from a different angle. Sometimes, hearing a concept explained by a different voice is all it takes for it to click.
Can an AI tutor replace a bad teacher?
When classroom instruction falls short, one-to-one tutoring is the most effective way to catch up. However, excellent human tutors can be expensive and hard to schedule on short notice. This is where modern AI tutors are changing the landscape of self-study.
A recent Harvard University study published in Scientific Reports found that students in an introductory physics course using a pedagogical AI tutor achieved median learning gains more than double those of students in an active-learning classroom, in less time (10.1038/s41598-025-97652-6). The key finding was that the AI acted like a seasoned instructor, asking guiding questions rather than simply handing out answers.
We built Fermi's AI tutor on this principle. When your child brings a topic, a course, a problem set or a scanned assignment, Fermi works out what they already know and builds a plan for the session, so they sit down to a clear next step. It holds a line of reasoning across a session, notices where a student is stuck, and decides whether to explain, ask, or show.
If your child is struggling to picture complex scenarios because the teacher only writes formulas on the board, the Fermi Simulation Lab has interactive simulations for the ideas that are easier to see than to read, such as the free expansion of an ideal gas.
A weak teacher is a significant hurdle, but it does not have to dictate your child's success. By communicating effectively with the school and equipping your child with the right self-study tools at home, you can turn a frustrating year into an opportunity for independent, self-directed learning.
