A Prodigy class code not working is usually a small mistake, not a broken account. The code is a short mix of letters and numbers, it must be typed exactly as the teacher gave it, and it must be entered in the right place inside the game. If any of those three things is off, Prodigy rejects the code. Work through the checks below in order, and most codes start working on the second or third try.
What a class code is
A class code is a unique set of letters and numbers linked to one teacher classroom in Prodigy. The teacher finds it on the class card in the teacher dashboard, and hands it to the students so they can join that class and appear on the teacher roster. Once a student joins, the teacher can set work for them and read their reports. The code is not a prize code and it does not unlock pets, coins or membership, so it will not work in any reward or redemption box. It only joins a student to a class. The full joining guide is How to join with a class code.
Where to enter the class code
Where you type the code depends on which game you open. In the Math game, after logging in you will see a New Teacher prompt. Press Update on that prompt, type the class code, and press Next to join the class. In the English game, press the Menu button, then the Account Settings gear button in the lower right of the screen, then Join Class, type the code, and press Join. Students who sign up as new students are asked for the code during sign up, right after choosing New Student. If you type the code anywhere else, such as a settings page or a reward box, Prodigy will not accept it, so use the exact spot for the game you opened.
The code itself is wrong
Most rejected codes are typed wrong. Class codes mix letters and numbers, and some characters look alike, such as the letter O and the number 0, or the letter I and the number 1. Type the code slowly, one character at a time, and check caps lock, because codes are case sensitive. Do not add spaces before or after the code, and do not add a dash unless the teacher code actually has one. The safest way is to ask the teacher to read the code out again, or to write it down for you, and then compare what you typed with what they gave you character by character. If the code came from a photo or a printout, check the print quality, because a blurry character is easy to misread.
Already in a class
A student who is already in a class can hit a confusing error when they try to enter a new code. Prodigy links the student to one class at a time for that subject, so a student who joined last year class may need the teacher to move them first. If the game shows no prompt and no Join Class option, the student may already be linked. Ask the teacher to check the roster: if the student name is already there, nothing more needs entering, and the work will simply appear. If the student needs to move to a different class, the new teacher removes them from the old class first, or the old teacher does it, and then the new code works.
Signed in to the wrong account
A code that belongs to one class will not work if the student is signed in to the wrong student account, such as a sibling account on a shared device, or a home account instead of the school account. Sign out fully, then sign in with the exact student login the teacher expects, and try the code again. This also happens with Google and Clever logins: a student who signs in with a personal Google account instead of the school one lands in a different Prodigy account, and the class code fails there. Use the school login the teacher set up. The login steps for each method are in Prodigy login for students.
Class is full or the code is old
New Prodigy classes have a limit of 200 students per class. If the teacher sees an error when adding more students, the class has hit that limit, and the teacher needs to split the students into a second class with its own code. A code can also stop working if it belongs to an old class from a past school year that the teacher has archived or deleted. In that case no typing fix will help: the teacher must give you the code for the current class. Teachers can confirm which code is live by looking at the class card in the dashboard, where the current code is shown.
What the teacher should check
If several students report the same code failing, the fault is on the teacher side. First, open the teacher dashboard, open All Classes, and check the code on the class card matches the code you handed out. Second, check the roster to see whether the student is already listed, which means they are already in and do not need the code. Third, check how the class was created: classes imported from Google Classroom or Clever add students through that system, and the code path works a little differently, so follow the steps for your import type. If the class is at the 200 student limit, create a second class and hand out its code. For the teacher login and dashboard steps, read Prodigy login for teachers.
Frequently asked questions
Why is my Prodigy class code not working?
The most common causes are a typing mistake, entering the code in the wrong place, being signed in to the wrong student account, already being in a class, or using a code from an old class. Check the code character by character first, then check you are in the right account.
Where do I enter a Prodigy class code?
In the Math game, use the Update button on the New Teacher prompt after login. In the English game, go to Menu, then the Account Settings gear, then Join Class. New students enter the code during sign up.
How long is a Prodigy class code?
Class codes are short alphanumeric codes, usually six characters, mixing letters and numbers. They are case sensitive, so type them exactly as given.
Can a class code expire?
A code stops working when its class is archived or deleted, such as an old class from a past school year. Ask the teacher for the code of the current class.
What is the student limit for a Prodigy class?
New classes have a limit of 200 students per class. If the class is full, the teacher needs to create a second class with its own code.
Related guides
This site is an independent guide. It is not the official Prodigy site, and it is not affiliated with Prodigy Education.
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