Here is the complete list of 8 full length official SAT tests that are available to students who are preparing for the new SAT test that was launched in March 2016. The eighth practice test which was the January 2017 SAT test has been released to the public as Practice Test 8. You can download the tests from the links listed below. You can also choose to purchase the 2018 Official SAT guide which contains all of these eight practice tests. The new official guide will be released on 17 May 2017.
SAT Practice Test 8 (same as January 2017 SAT Test)
SAT Practice Test 7 (same as October 2016 SAT Test)
SAT Practice Test 6 (same as April 2016 School day SAT Test)
SAT Practice Test 5 (same as May 2016 SAT Test)
SAT Practice Test 4
SAT Practice Test 3
SAT Practice Test 2
SAT Practice Test 1
where is the scoring guide
The link to the scoring guide are all listed in the article. For example, in case of Test 8 it is under the title: Answers and Scoring Practice Test 8.