How Long Should Homework Take?

Oct 7

4 min read

It is 7:40 on a Tuesday. Four problems are left on the worksheet. Your child has been at the table since 5:15, and you are both well past the point where anything useful is happening.

The question underneath that evening is one almost nobody answers for parents. How long was this supposed to take?

There is a suggested number

The National Education Association and the National PTA both endorse what is usually called the ten-minute rule. Roughly ten minutes of homework per night, per grade level, across all subjects combined.

Third grade is about thirty minutes. Sixth grade is about an hour. Twelfth grade tops out near two hours.

The guideline came out of a synthesis of homework research, much of it work Harris Cooper did at Duke, and a number of school boards have since written it into policy. It was written as a calibration aid for teachers rather than a precise standard, and it works better as a sanity check than a stopwatch.

What it gives you is a reference point that is not your own frustration.

When your child needs three times that

Plenty of children with ADHD sit down to thirty minutes of assigned work and are still there ninety minutes later. That gap is worth understanding before effort comes into it at all.

Getting started is its own task, separate from the work itself, and it can absorb twenty minutes before a pencil moves. Working memory drops the thread partway through a problem, so the question gets re-read three times. Recovering from an interruption costs far more than the interruption did. None of that is time spent learning, though all of it shows up on the clock.

The thing worth holding onto is that time on task and understanding are different measurements. A child who can talk you through how the problem works, and still cannot get six of them onto paper, has demonstrated they know it. The worksheet is measuring something else.

Set a stopping point

Plenty of children with ADHD sit down to thirty minutes of assigned work and are still there ninety minutes later. That gap is worth understanding before effort comes into it at all.

It also does not mean the wrong thing was assigned. A worksheet calibrated for a class of twenty-four will land differently on all twenty-four, and the distance between what was assigned and what it costs at your table is the piece neither of you can see from where you are standing.

Keep two weeks of notes

One rough night tells you very little. Two weeks of pattern gives you and the teacher the same picture to work from, which is the thing neither of you has at the start.

Keep a note on your phone with four things per night: what time your child started, what time they stopped, what got finished, and where they stalled. That last column is usually the most revealing one. If they stall in the same place each night, at the transition into the work rather than inside it, you have found something an accommodation can address.

Bring that log when you talk to the teacher. You each hold half of this. They know what the class is covering and how your child works in the room, and you know what the same assignment costs three hours later. Put the halves together and the conversation gets much shorter. If you want a way to open it, our post on answering the first email from your child's teacher has a reply you can adapt, built around four questions.

What to talk through

There is usually more flexibility in how an assignment gets done than either of you has had reason to discuss. These are the adjustments that come up most often.

A cap on time rather than on problems, agreed in advance
Odd numbers only, or a set number of problems that shows the skill
Typed instead of handwritten when the handwriting is what is slow
The assignment written down somewhere your child can check after school
Credit for work done in the agreed window, rather than for completion

Bring two or three as options rather than one as a request. A teacher knows their own constraints better than you do, and a specific starting point gives them something to adjust.

If the pattern does not shift

When you have logged it, adjusted the routine, asked the teacher, and homework is still eating your evenings by December, the issue is bigger than homework. That is the point where a formal conversation about accommodations makes sense, and our post on how to ask your child's school for a 504 meeting walks through the request.

You can also bring the log to a free call with Eva Luther, BCBA, and we can read it together. Two weeks of start times and stopping points usually says more than an hour of describing it from memory.