The TopScore CD expires after 6 mos, but you can call them up to ask them to extend it another 6 mos if you plan to take the OAT again. (I think it's a good reference -- in my opinion, it's worth paying for it rather than trying to use someone else's copy.)
J.opt said:
Hey does anyone have a Lippincott OAT book for sale? PM me 👍
Btw, do the TopScore CDs expire after so long?
Thanks.