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Importing Users

Stack lets you quickly bulk upload student accounts using a simple CSV file. Whether it’s the start of a new year or you’re just adding more students, here’s how to import users the right way.

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Step 1: Format Your CSV

Your file must follow this format with these two exact columns: 
student_id,email
42069,blake.johnson@stackhs.org
12345,emma.thompson@stackhs.org
86753,sarah.lee@stackhs.org
90013,tyler.nguyen@stackhs.org
50505,grace.henderson@stackhs.org
13370,lucas.martinez@stackhs.org
24680,julia.kim@stackhs.org
77777,noah.patel@stackhs.org
10101,madison.clark@stackhs.org
88888,elijah.brown@stackhs.org
You can download our sample CSV to use as a template. We recommend creating your CSV using:

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Step 2: Upload Your File

To access the import tool, go to yourname.stack.events/dev/users/import or open the Dev menu → Manage Users → Import Users. Upload your file in the field provided. You’ll then see a preview of the first 10 rows of your data.

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Step 3: Choose Whether to Wipe Previous Imports

You’ll see a checkbox labeled: “Wipe all previous imported users”
This deletes every previously imported student record before adding your new list. Use this if:
  • You’re starting fresh (new semester, new year, new class)
  • You want to remove all existing imported students and replace them
Leave it unchecked if:
  • You’re adding a few more students to an existing list
  • You want to keep your current imports and just add more

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Dangers of Wiping All Users

If you check the wipe all previous users box, none of your existing students will be able to sign up or log in — unless they’re included in the new CSV.Once wiped, those students will see an error that their email isn’t recognized during sign-up.Use this only when you’re truly resetting your user list — like at the start of a new year.

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Step 4: Preview & Import

After uploading, Stack will show you a preview table of your CSV contents (first 10 rows). Check that:
  • Every row has a valid student_id and email
  • No fields are missing or malformed
Then hit Import All to finalize.

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After Importing

Imported users can now go to your instance URL and create an account using their assigned email address. If a student can’t sign up:
  • Double-check their email is listed in the import
  • Try re-uploading your CSV
  • Make sure you’re using the correct instance subdomain
Still need help? Contact Support and we can walk you through the process.