No one at Texas Tech University or from anywhere else should ask for your password.
In the Settings app, tap Passwords. To delete a password, swipe left on the item that you wish to delete, and then tap the red Delete button. To edit a password, tap the item that you wish to update, tap Edit, and enter the updated password.
Detailed instructions may be found below.
1) Open the Settings app.
2) Tap Passwords.
3) Authenticate by either using Face ID, Touch ID, or typing your device's passcode.
4) If desired, you can use the search field at the top to filter the items.
5) Perform the desired action.
To delete a password
Swipe left on the item you wish to delete and tap the red Delete button.
To update a password
Tap the item that you wish to update.
Type an updated password into the "Password" field. Then, tap Done.
You have cleared or updated saved sign-in credentials on your Apple device.