# Google Tools for Teachers (3): FormLimiter — Set a Time Limit on Google Forms Quizzes

https://ijuhsu.com/en/posts/googletools-03 · 2021-05-21
Category: teaching · Tags: Google Forms, 考卷, 教學工具

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For all online teaching activity content, visit the [Online Teaching Resource Hub](/en/teaching/), which includes all interactive PowerPoint templates, Google tools, and other useful resources.

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## Google Forms Add-on: Timer+Proctor

Online quizzes ([see here for how to build one](/en/googletools-01/)) are incredibly convenient — but a lot of teachers ask: is there any way to prevent questions from leaking? Can we do anything about cheating?  
Beyond tweaking the form's built-in settings, we can also use add-ons as an extra layer of protection.  
Of course, these measures stop the honest-but-careless, not the truly determined cheater — but having some protection is better than none.

There are quite a few Google Forms add-ons out there. Today I'm covering FormLimiter. Another good one is Timer+Proctor, which integrates with Google Classroom — but its free tier only allows 50 quizzes, so I'm introducing FormLimiter instead, since it has no such cap.

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## Layer 1: Google Forms' Built-in Settings

The first layer of protection comes from the form's own settings. Click the gear icon in the upper right to get started.

### Settings: General

Configure it as shown below. This limits each student to one submission and prevents them from editing their answers after submitting.  
Note that this will require students to be signed into a Google account.

![](https://res.cloudinary.com/dycjoye5f/image/upload/q_auto,f_auto/ijuhsu/image-49)

### Settings: Presentation

A few options to consider here:

*   Show progress bar: up to you
*   Shuffle question order: if you want maximum protection, you can enable this — but keep in mind it will shuffle everything, including any name fields, so think it through first
*   Show link to submit another response: turn this off so only the people you've sent the link to can access the quiz

![](https://res.cloudinary.com/dycjoye5f/image/upload/q_auto,f_auto/ijuhsu/image-50)

### Settings: Quizzes

The gold standard is "Chromebook locked mode," but that's rarely available. Here are the key options to pay attention to:

*   Release grade: Later, after manual review — the form can still auto-grade some questions, but results won't be sent until you've confirmed everything looks good. Students also won't know their results ahead of time.
*   Missed questions: don't check
*   Correct answers: don't check
*   Point values: optional, but I'd recommend leaving it unchecked for now

![](https://res.cloudinary.com/dycjoye5f/image/upload/q_auto,f_auto/ijuhsu/image-51)

At this point, you've ensured that:

*   Students won't see their scores immediately
*   Students can't use question numbers to tip each other off about answers
*   Students can only submit once
*   Students won't know which answers were right or wrong

If you need additional protection, continue to the next step.

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## Layer 2: Google Forms Add-on — FormLimiter

### Step 01: Install FormLimiter

With your form open, click the three dots in the upper right and select **Add-ons**.  
You'll find plenty of useful add-ons in there — today we're installing **FormLimiter**.

Select your account, read through the permissions, and click through to install if you're comfortable.

### Step 02: Configure FormLimiter

After closing the installation window, go back to your form and press F5 to refresh the page.  
You'll notice a new puzzle-piece icon has appeared in the upper right — that's the add-ons menu.

Click it, then select **formLimiter – PROD**, then **Set limit**.  
A panel will appear in the lower right where you can configure your settings.

![](https://res.cloudinary.com/dycjoye5f/image/upload/q_auto,f_auto/ijuhsu/image-52)

The **Limit Type** offers two options:

**date and time**

This is the one you'll almost always use for quizzes. Set a date and time, and optionally customize the message students see if they try to access the form after it closes.  
Think about how much time students need — for example, if I want the last ten minutes of class to be a quiz and class ends at 12:00, I might set the deadline to 12:05 (building in a little buffer).

Don't forget to click **Save and Enable** for the settings to take effect.

![](https://res.cloudinary.com/dycjoye5f/image/upload/q_auto,f_auto/ijuhsu/image-53)

**number of form responses**

This option is better suited for surveys than quizzes, but worth knowing about.  
If you have 50 students and you don't want anyone submitting from an alternate account, set the limit to 50. Once 50 responses are received, the form closes automatically.

Don't forget to click **Save and Enable** here too.

![](https://res.cloudinary.com/dycjoye5f/image/upload/q_auto,f_auto/ijuhsu/image-54)

### Note: What Students See

Let's look at what the student experience actually looks like.

Whether a student **tries to access the form after the deadline** or **started the form in time but submitted after the deadline**, they'll see the same screen.  
So the time limit covers both scenarios. :D  
Just make sure to include a reminder in the form itself telling students to submit on time!

![](https://res.cloudinary.com/dycjoye5f/image/upload/q_auto,f_auto/ijuhsu/image-55)

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## Note: Security Concerns

Some people have asked whether the permissions FormLimiter requests are a security risk.

I can't say there's zero risk, since it does request quite a few permissions — but most of them seem necessary. Here's a quick breakdown of what each permission is for:

**[For enabling/disabling the form]**

*   View, edit, create, and delete all your Google Drive files
*   View, edit, create, and delete all spreadsheets in your Google Drive
*   View and manage your forms in Google Drive

**[For running the add-on]**

*   Connect to an external service
*   Allow this application to run when you are not present
*   Display and run third-party web content in prompts and sidebars within Google applications

**[For sending students the "form closed" message]**

*   Send email on your behalf

FormLimiter is essentially the most well-known add-on of its type, with 10,000,000+ users and a rating of around 4.1. And realistically, any add-on with these kinds of features will need these permissions.  
That said, the first permission is quite broad. **If you're concerned about security, consider creating the form from a secondary Google account** — that way, the impact is minimal.

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I hope this walkthrough was helpful for everyone!  
If you have any questions, or there's an activity you'd like to learn about, feel free to leave a comment anytime.  
For all PowerPoint-based online teaching activities, see:

Thanks again everyone — wishing you smooth sailing with online teaching!

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