Google Classroom: How to Turn In Assignments

To turn in an assignment in Google Classroom, open the assignment, attach any required files or links, and click the “Turn in” button (or “Mark as done” if no attachments are needed). This guide walks you through the exact steps on desktop and mobile, explains the difference between “Turn in” and “Mark as done,” and covers common issues like unsubmitting or missing attachments.

What You Need Before You Start

Turning in an assignment requires a Google account (personal or school-issued) and access to Google Classroom through a web browser or the mobile app. Your teacher must have created the assignment and added it to the class stream. If you don’t see the assignment, check the “Classwork” tab or ask your teacher to confirm it’s published.

You can turn in assignments from any device, but the steps differ slightly between the web version and the mobile app. The web version is recommended for complex assignments with multiple files, while the app is fine for quick submissions.

How to Turn In on a Computer (Web)

1. Go to classroom.google.com and sign in with your Google account.
2. Open the class that contains the assignment.
3. Click Classwork at the top, then select the assignment from the list. You can also find it under “To Do” on the left sidebar.
4. Read the instructions and check if there are any attached files or links provided by the teacher.
5. To add your own work, click Add or create and choose one of the options:
   • Google Drive – attach a file stored in Drive.
   • Link – paste a URL (e.g., a shared doc or a video).
   • File – upload a file from your computer.
6. If you need to create a new Google Doc, Slide, Sheet, or Drawing, choose Google Docs, Slides, Sheets, or Drawing from the same menu.
7. Once everything is attached, click Turn in in the top-right corner.
8. A confirmation dialog appears – click Turn in again to confirm.

If the assignment doesn’t require any attachments (e.g., a reading or a question to answer in class), you’ll see a Mark as done button instead. Clicking it simply marks the assignment as complete without submitting any files.

How to Turn In on the Mobile App (Android/iOS)

1. Open the Google Classroom app and sign in.
2. Tap the class that has the assignment.
3. Tap Classwork at the bottom, then select the assignment.
4. Tap Add attachment (paperclip icon) to attach a file from your device, Drive, or a link.
5. You can also tap the + icon to create a new Google Doc, Slide, Sheet, or Drawing.
6. After attaching everything, tap Turn in in the top-right corner.
7. Confirm by tapping Turn in again.

If the assignment has no attachments needed, you’ll see Mark as done instead. Tap it to complete the assignment.

What Does “Turn In” vs. “Mark as Done” Mean?

These two buttons serve different purposes. “Turn in” is used when you need to submit work – files, links, or a created document. It locks the assignment, meaning you can’t make changes unless you unsubmit (see below). “Mark as done” is for assignments that don’t require a submission, like reading a chapter or watching a video. It simply notifies the teacher that you’ve completed the task.

Some teachers set up assignments so that “Mark as done” is the only option, even if they expect a file. In that case, you might need to add a private comment with a link to your work. Always check the instructions if you’re unsure.

How to Unsubmit and Edit After Turning In

If you accidentally turned in the wrong file or forgot to attach something, you can unsubmit – but only if the teacher hasn’t graded it yet. To unsubmit:

1. Open the assignment in Classroom.
2. Click (or tap) your submission under “Your work.”
3. Click Unsubmit and confirm.

Once unsubmitted, you can edit or replace attachments and then turn it in again. Note that unsubmitting may notify your teacher, so use it only when necessary.

Common Problems and How to Fix Them

• No “Turn in” button? The assignment might be set to “Mark as done” only, or the due date has passed and the teacher disabled late submissions. Check the assignment details.
• File won’t upload? Make sure the file is under the size limit (usually 100 MB) and that you have a stable internet connection. Try using Google Drive instead of uploading from your device.
• Accidentally turned in without attachment? Unsubmit, add the attachment, and turn in again.
• Can’t see the assignment? Refresh the page or check if you’re in the correct class. If it’s missing, contact your teacher.
• Turned in but teacher says they didn’t receive it? Check the “Your work” section to confirm it says “Turned in.” If it does, ask the teacher to check their grading queue.

Frequently Asked Questions

Can I turn in an assignment after the due date?

Yes, but it depends on your teacher’s settings. If late submissions are allowed, you’ll still see the “Turn in” button, and the assignment will be marked as “Late.” If not, the button may be grayed out. Some teachers allow late work but with a penalty, which is handled outside Classroom.

What happens if I forget to attach a file and turn in?

You can unsubmit and add the file, as long as the teacher hasn’t graded it yet. If the teacher has already graded it, you’ll need to ask them to return the assignment to you.

Can I turn in the same assignment twice?

No, you can only turn in once. If you need to resubmit, you must unsubmit first, then make changes and turn in again. The teacher will see the latest version.

How do I know if my assignment was submitted successfully?

After clicking “Turn in,” the status changes to “Turned in” and the button disappears. You’ll also see a confirmation message. On the Classwork page, the assignment will show as “Turned in” (green checkmark).

Can I turn in an assignment from a shared device?

Yes, but make sure you’re signed into your own Google account. After turning in, sign out to prevent others from accessing your account. It’s safer to use a personal device if possible.

What’s the difference between “Turn in” and “Submit” in other platforms?

In Google Classroom, “Turn in” is the equivalent of “Submit” in other LMSs. The terminology is unique to Classroom, but the function is the same: it finalizes your submission so the teacher can grade it.

Tips for a Smooth Submission

• Always double-check that all required files are attached before clicking “Turn in.”
• If you’re working on a Google Doc, you can attach it as a link or as a file. Linking is often better because the teacher sees the latest version.
• Use the “Private comment” field to leave a note for your teacher if needed.
• Submit early to avoid last-minute technical issues.

Turning in assignments on Google Classroom is straightforward once you know where to click. If you run into issues, the unsubmit feature and your teacher’s settings are the main things to understand. With these steps, you’ll never miss a submission again.

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