If I was in grad school in 2016. Can I get a tax break and wait for my school to post my 1098T information

[KenH1]

Yes, you can still qualify for an education tax credit while in graduate school.  Graduate students generally qualify for the Lifetime Learning Credit (not the American Opportunity Credit).

It is recommended that you wait for your college to send (or post online) your 1098-T information.

TurboTax will walk you through the steps for inputting your 1098-T and determine which credit is best for you.

Additional information on education tax credit can be found here:

Education Tax Credits