NICERC Capture the Flag

Capture the Flag competitions are used to train on encryption, hacking, or overall cybersecurity and are also how real-world cybersecurity teams train. This Capture the Flag competition platform is free to use for K-12 education settings and is designed to cover material learned throughout the school year as well as various cybersecurity topics.

Find step-by-step registration below, as well as CTF tips for beginners. Have fun!

Monthly CTF

Capture the Flag for Middle School

Opens May 1, 2020
Closes May 31, 2020

This month-long CTF contains cybersecurity challenges appropriate for middle school level students.

Special Feature CTF

Social Distancing Capture the Flag

Opens each Monday at 12:00 EST
Closes each Friday at 12:00 EST

Coronavirus keeping you at home? CTF will help keep your mind sharp! Parents, families, and teachers can all join.

Upcoming Competitions

Special Feature: Social Distancing CTF

When: Ongoing, reset weekly

Who: K-12 students, parents, & teachers


Middle School Capture the Flag

When: May 1-31

Who: Middle school students

Where: Online

Getting Started

Watch this quick video of the registration process. Step by step instructions can be found below.

  • Enter your CTF competition.
  • Click the “Register” button located at the top right of the page, as shown below:


  • Once on the “Register” page, as shown below, students will then create an account.*The scores and user list are public and do not require accounts to view. Keep this in mind when creating an account and do not include personal information that you don’t want seen outside of the classroom.
  • After an account has been created, students will use that login information for as long as they engage with this CTF. At the end each month, the CTF environment will be reset and all users will be removed. This will mean if teachers intend to use the CTF for a second month, then students will have to recreate their account. 

Submitting Answers

When logged into the CTF students will submit answers to challenges in order to increase their scores. To do this: 

  • Click on the category you would like to view, as shown below, the user clicks on “Before you start!” 




  • You will notice that the point value of the challenge is located to the right of the challenge name. 
  • Simply click the challenge you would like to view to see more details on how to solve it, as shown below, the user clicks on “Is this thing on?” 



  • A screen, like the one shown above, will display the challenge details, point value, number of participants who have solved it, and an input box where you can attempt to solve the challenge. Type the answer you believe to be correct and press submit. 
  • One of the following images will appear at the bottom of the popup window to show whether the answer was correct or incorrect.



  • While looking through the challenges you will see whether you have completed the challenge by locating a check mark next to the name.