All TC Williams Lacrosse Players must complete concussion testing via XLNTbrain.  Please have your athletes follow the instructions below.

Join TC Williams High School on XLNTbrain

TC Williams High School has joined XLNTbrain in the fight against concussion injury in sports.

Concussion awareness education is mandated by State law for all athletes and their parents and / or guardians. This document outlines the steps required for athletes, parents and / or guardians to register at

The XLNTbrain Passcode for TC Williams High School is: TC WILLIAMS ATHLETE

* Make sure your environment is distraction free. No music, no television, no siblings, or pets causing distractions. Put yourself in a quiet room to ensure you will not have trouble passing.

* Read all instructions on the screen carefully. Some sections are timed, so your reaction time is equally important as getting things correct.

* If you do not try to do well, or complete sections incorrectly, your results will be invalid. If your test is invalid you will have to retake it! Do not waste your time, your coach’s time, or our time. Take this seriously and try to do well the first time!

!!! There is no point in having someone else take the test for you, and will only make it more difficult for you to get back to THEIR baseline. It’s almost impossible to match someone else’s results in all sections. This will make your recovery and clearance process longer and more difficult if you are ever asked to take a follow up test due to a possible concussion!

Athlete Registration

Go to, click “Sign Up” and enter the passcode above to begin your registration. Click “Join as an Athlete” after you complete your registration, and then follow these steps:

  1. View concussion awareness video and pass brief video quiz
  2. Update profile info & accept terms and conditions
  3. Manage your teams
  4. Take the XLNTbrain Baseline Test

The XLNTbrain Baseline Test takes approximately 25 minutes and is important for your healthcare provider to use as a baseline to compare for your recovery. It is important for you to take the test seriously and be in an environment free of distractions as you test. If you perform poorly on the test, you may be asked to repeat the test under supervision.

XLNTbrain Baseline Test Quick Guide

Please sign into your account on Once you ve signed in, click the link near the top of your screen that asks if you want to take the test now. Please start the test by selecting the “Click here to Start your Cog Test” button.

Please keep in mind that the XLNTbrain-Cog test is for Athletes only.

Guardian Registration

Go to, and enter the passcode above to begin your registration. Click “Join as a Guardian” after you complete your registration. With your imrst-time sign-in, you will view a short concussion awareness video. After reviewing the video and passing a brief video quiz, you will need to add your athlete as a dependent. Then you will be able to access your athlete’s profile, where you may monitor the progress of your athlete within XLNTbrain.

To add your Dependent, please look on the left hand side of your Dashboard you should see a tab called “Relationships”. Click on that tab and then click “Add Dependent”. You will need to enter your Athlete’s XLNT Brain ID in the box. If you enter your Athlete’s name it will not work. Your Athlete’s XLNT ID is listed on their account when they are logged on, in the upper right hand corner. It will look like this: XLNTbrain ID: ZWE2NDU4M, except with your Athlete’s ID of course. Once you enter your Athlete’s XLNT ID, click the Add Dependent button and that should link your accounts. You may need to refresh your page or log out of your dashboard and log back in to update the information your dashboard shows.

XLNTbrain Help

Click on the “Help” button at any time to ask for help. Please note this is not a Live Chat. However a support representative will respond to your request as soon as possible.