Taking out the essay writing option

<p>Hi guys,
I am taking the ACT as a standby tester tomorrow, however, the school I am looking at does not require the writing option, can I change tomorrow on the spot from with writing to w/o writing? Would I get refund for the writing section?</p>

<p>Also, is it worth taking the ACT even though I've had 0 practice?
I have a 2130SAT currently with a not-very-ideal score composition (high math soso CR and Writing)</p>

<p>Thanks!</p>