I Can Always Tell When a Parent Did the Homework. Here Is What It Looks Like.
After fifteen years of marking, a maths teacher explains exactly how parent-completed homework reveals itself — and what it costs the child.

I want to be precise about this, because vagueness lets everyone off the hook.
When a parent completes their child's maths homework, here is what it looks like in my marking pile. The working is too clean — not in terms of neatness, which children can achieve, but in terms of structure. A child's working has false starts, crossings-out, attempts. Even a very neat child has a quality of construction in their working that shows you the thinking in process. Parent working has a different quality: it's reported rather than constructed. The method appears fully formed. There are no abandoned attempts.
The numbers are also different. A P4 child working on fractions will produce certain predictable types of computational error — the kinds of errors that come from a specific stage of learning. Parent working produces different types of errors, or no errors at all. Strangely, sometimes the parent's homework is slightly wrong in a way that reveals an adult misremembering a method they haven't used in thirty years. This is, I confess, the most poignant version.
And then there is the test. This is where the homework completion becomes consequential rather than merely interesting. I design my tests to follow directly from the homework. Not to catch anyone out, but because the homework is practice for exactly what I want to assess. When a child can produce perfectly correct homework and then cannot perform the same type of problem in the test, the gap tells a clear story. I write notes. I speak to the child. I arrange to see the parents.
The conversations are always uncomfortable, and I try to conduct them without making anyone feel they are on trial. Most parents who complete their children's homework are not trying to deceive me. They are trying to help. The evening was late, the child was struggling, the parent sat down "just to show them" and slid, by increments, into doing more than showing. This happens genuinely and out of love. But love is not the only consideration.
Here is what completing the homework costs the child. First, it removes the single most important data point I have: their actual current understanding. My homework is not just practice; it's diagnostic. When the homework is wrong in particular ways, I learn something about where the class's understanding is breaking down, and I use that to adjust my teaching. When the homework is parent-perfect, I lose that signal. I continue teaching assuming a level of understanding that doesn't exist.
Second, it deprives the child of the practice that the homework was designed to provide. Maths, more than almost any other subject, requires the student to do the work. You cannot become better at maths by watching someone else do maths, or by copying maths that has been done for you. The problem set I gave was calibrated to build specific skills that come from the struggle of working through it. The child who sits next to their parent and watches the parent work is not gaining those skills.
Third, and this takes longer to become visible, it teaches the child that difficulty is a signal to recruit an adult rather than to try harder. This is a very damaging lesson in a system that will, eventually, require them to sit alone in an examination hall with no adult nearby.
I've watched the trajectory of children whose homework was regularly completed for them. By P5 and P6, when the work genuinely becomes harder and the homework is completed for them less easily, they have no resilience to draw on. They have been deprived of the experience of struggling with difficulty and coming through it, which is the only experience that builds the capacity to continue struggling with difficulty.
What I want parents to do is something different from either "help" or "leave completely alone." I want them to sit with their child while the child does the homework. To be present. To say "that looks tricky, can you tell me what you've tried so far?" To be interested and supportive without solving. When the child is genuinely stuck — not resistant, genuinely stuck — to help them understand the underlying concept rather than produce the correct answer for that specific problem.
This is harder than doing the homework. It requires patience and restraint and a willingness to let your child sit with uncertainty. It also requires a degree of mathematical confidence that some parents don't have — and to those parents, I say: email me. Tell me your child is stuck and you don't know how to help. I will give you a specific explanation of the method and how to explain it. That is genuinely my job, and I'd rather do it than have a parent sit at a kitchen table at ten at night, anxiously transcribing answers from a marking scheme onto a worksheet that will arrive in my pile tomorrow.
I know the system puts families under real pressure, and I don't think parents who complete homework are bad parents. I think they're tired parents who are trying to protect their children from the consequences of incomplete homework. The irony is that the protection they're providing is from something that would actually help.

Former Hong Kong primary maths teacher with 15 years in the classroom. Built Tutor Wong after seeing the same homework mistakes thousands of times. Believes every error is a learning opportunity — if you know where to look.
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Disclaimer: The opinions expressed in this article are those of the author alone and do not represent the views or positions of 補習天王 (Tutor Wong), its founders, staff, or team. This article is provided for informational purposes only and does not constitute professional advice.
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