Once an abbreviation for Scholastic Assessment Test (and earlier for Scholastic Achievement Test), SAT is sufficient on all references, with no periods. Score totals are written without a comma: 2100.
The SAT was revamped and enlarged in 2005. A new writing section was added to the revised mathematics and critical reading (formerly called verbal) sections. Beginning in spring 2005, the maximum possible score on the SAT is 2400 rather than 1600.
As with GPAs, federal law prohibits releasing individual student scores except with the explicit written permission of the student (not a parent).