<p>Does anyone know how many SAT subject tests can be taken on one test date? I've heard anywhere from one to three. Thanks</p>
<p>Up to three tests can be taken on one test date.</p>
<p>You can take 3.</p>
<p>Also, you can sign up for one online, and take others on the test date (sophomore year I signed up for bio, and after I registered I decided to also take US history; the test booklet they give you has (nearly) all of the subject tests in it, sans subjects like listening languages and world history for certain dates).</p>