To clarify, are you asking if you qualify for an Education Credit? For the American Opportunity Tax Credit you must be enrolled at least half-time for at least one semester during the tax year (this would be marked on your 1098-T box 8). For the Lifetime Credit, you only need to take one class. Please see What education tax credits are available for more details.
Please be aware, that if you are claimed as a dependent then you won't be able to claim the Education Credits.
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