Disable Browser Spell Check Feature
When assigning Spelling assessments, be sure to disable the spell check feature on your system's browser. Disabling the spell check feature will prevent the red line indicator from appearing underneath the misspelled word.
This option is not available when using teacher accounts; it is only available when using student accounts.
The spell check option is not available when using the Free Response question.
Select the 3 dots at the upper right hand corner
Select "Advanced" (on the left hand side of your screen)
Underneath the Languages tab, toggle the spell check button off to disable the spell check option
In the Menu bar at the top of your screen, click "Firefox"
In the general panel, select Preferences
Uncheck "Check your spell as you type"