YES!!!
SAT II's are also known as SAT Subject Tests. These tests are standardized (just like the SAT Reasoning Test), but they only focus on one subject (for instance, physics). Many colleges require students to take SAT II tests.
Sat, satII, and act
No, it's quite different. The SAT I is split into three sections: critical reading, math, and writing. That's all it tests. The SAT II subject tests are specific to individual academic subjects. So you can take an SAT subject test in Calculus AB, in physics, etc. The SAT subject tests are kind of close in idea to the AP exams - they are focused on specific academic subjects. Many, many colleges require the SAT I - the general test. Few actually *require* any SAT subject tests, although some do, and if you take them and do well, it can help your application even at schools that don't require them.
Either the SAT or the ACT and most big, prestigious schools like Boston College require at least 2 SAT Subject Tests
The SAT Reasoning Test is more general and tests your logic. It has math, critical reading, and writing sections, and is taken much more often than the subject tests. SAT Subject Tests focus on one specific subject, like US History or Physics. If you require any other information, practice tests,notes or reviews you can log on to www.examville.com.It has all the information required, Great stuff.
see wikipedia
The SAT II tests your knowledge of a particular subject. There are many different SAT II (a.k.a the SAT subject test) tests. It is suggested that you take the test in a subject that you have taken an AP or Honors course in or know a lot about.
There isn't a conversion between the two. The SAT I is the standard math, reading, writing test, which is required for most colleges. The SAT II, know as SAT Subject Tests, are one hour tests in one subject only. These tests allow you to show your strengths in particular subjects - especially the sciences and foreign languages as these are not tested on the SAT I - but most students take them because some colleges require them. SAT II scores have varying curves depending on the test, so conversion to SAT I scores is impossible.
It is certainly possible, and actually quite common, to take both the SAT examination and SAT subject test(s) in the same sitting. If you choose to take that route when registering, after taking the standard SAT, you must touch base with a proctor, who will then take you to your subject test. Common subject tests include Chemistry, Math II, and various foreign languages. Subject tests are typically not required, or can be replaced by the ACT, for college admissions purposes. Their traditional value has come in determining placement into intro college courses.
ACT or SAT
The two types are the original SAT Test with three sections and the Subject Tests. Subject tests cover a variety of high school topics such as physics, biology, math, and foreign languages.
The SAT (Scholastic Aptitude Test) is one of two tests colleges and universities require for application to an undergraduate program. The other is the ACT. Most schools only require one of these tests, but some are specific as to which test they require.