The moment help turns into authorship is usually identifiable and almost never noticed. It arrives around the third correction, when the paragraph in front of you is close enough to fixed that finishing it yourself would take ninety seconds. You finish it. The assignment comes back with a good mark on work that no longer measures anything.
The rules below are about staying on the useful side of that line without becoming useless, which is the other failure and the more common one in houses where the first one has been discussed.
Ask what the assignment is testing
Every piece of homework is measuring something narrower than it appears. A book report is often measuring whether the student can find evidence in a text, not whether they liked the book. A set of twenty similar math problems is measuring speed and automaticity, which is why doing five of them carefully misses the point.
Ask the student what the teacher is looking for. If they cannot say, that is the actual problem, and it is one you can help with by sending them to ask. A student who knows what is being measured can usually tell on their own whether an answer is finished.
The stuck timer
Set a timer for ten minutes when the student says they are stuck. During those ten minutes you do not answer questions and they do not leave the table.
Most stuck is not stuck. It is the discomfort of the first two minutes of hard thinking, and the fastest exit from it is asking an adult. Ten minutes with no exit available resolves a surprising share of it. When the timer goes and they are still stuck, that is genuine and worth your time, and you now know it is.
The version of this that works for younger children is shorter, maybe three minutes. The principle holds. What you are training is the ability to stay in an unresolved problem, which is worth more over a school career than any individual worksheet.
Read it back, do not fix it
For written work, the single most useful thing an adult can do is read the piece out loud to the student while they follow along. No commentary, no corrections, just their words in someone else's voice.
They will stop you. Repeated words, a sentence that ran out of air, a paragraph that says the same thing twice. They hear it because hearing is a different channel from reading, and the fix is theirs, which means the next draft they write on their own is better. Handing back a marked up page does not do this. It teaches them to wait for the markup.
When something is genuinely wrong and they have not caught it, name the location rather than the fix. There is something off in the third paragraph. Find it.
The parts that are yours to own
There is territory here that belongs to the adult, and declining to take it is not respecting independence, it is just leaving a gap.
- A place to work with a surface, a light, and nothing charging on it.
- The calendar. Long projects need dates working backward from the due date, and a fourteen year old is not going to build that unprompted.
- Materials and transport. Poster board on a Sunday night is your job.
- Contacting the school. If something is wrong structurally, that conversation is yours.
- Protecting the hour. The most common reason homework goes badly is that it started at nine thirty.
When to pay someone
A tutor is worth it for a specific diagnosed gap, not for general support. If a student is failing algebra because they never solidly learned fractions, a handful of sessions aimed at fractions can turn the year around. If they are failing because they are not doing the work, a tutor becomes an expensive homework supervisor and the underlying problem carries on.
Ask a prospective tutor what they would want to check first. Anyone who answers by describing a diagnostic is thinking correctly. Anyone who answers by describing a package is selling one.
Where the rules bend by subject
Math is the subject where hands off is hardest to hold and most necessary. Watching someone work a problem wrong to the end and only then discussing it feels cruel. It is also the only version that produces a student who can check their own work, because the checking is the skill. Sit with them and say nothing until they finish.
Writing is the opposite. Talking is legitimate help, and talking before drafting is how most competent adults write anything. Arguing with a fifteen year old about their thesis for ten minutes is support. Typing a sentence of it is not.
Languages want drilling and drilling wants a second person, so vocabulary practice at the kitchen counter is fair game and always has been. Science labs and history papers behave like writing. Anything with a rubric attached, meaning a printed sheet listing what earns each mark, should be read by the student out loud to you before they begin, because half of all lost points are things the rubric asked for and nobody read.
What the line looks like from the other side
Students can tell. A teenager who has had a parent write their conclusions knows the mark is not theirs, and the confidence it costs them is harder to rebuild than a grade.
Help that stays on the right side of the line is slower and looks less impressive on the page. It also produces someone who can sit down alone in a college library and start, which is the only outcome that was ever being measured.