Most people take it b/w junior & senior year in the summer .
I was afraid of doing bad and having to rush a second attempt in winter break so here's what I did:
I have it a year early, sophomore year summer. I had all the perquisites and felt I was prepared. unfortunately I got mediocar grades so I gave it again in junior year summer.
I applied in June & gave my dat in late August. I took a gamble and sacrifices leaving my application status as incomplete because I was confident in the rest of my application.
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