You can change your password to what ever you like by pressing the CRTL+Alt+Delete keys at the same time:
On the screen that comes up click on Change password:
In the box that comes up type your current password in the 2nd line and your new password in the 3rd and 4th lines:
Then click on the Arrow to proceed:
This will reset the password for your computer login and portangelesschools.org email.
Passwords may not contain the user's Account
Name, must be at least 8 characters, and must have an upper case letter, lower case letter, and at least one number or special character. (https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-10/security/threat-protection/security-policy-settings/password-must-meet-complexity-requirements)