Ours is similar to what most have posted. Three tracks:
regular: 6th grade general math, 7th grade general and 8th pre-Alg
advanced: 6th grade general, 7th pre-Alg, and 8th Alg
gifted: 6th grade pre-Alg, 7th Alg, 8th Geometry
For our school, the IAAT (Iowa Algebra Aptitude Test) and standardized scores were very important. Your daughter should know all grade level material (fractions/ratios/decimals and of course all facts), know how to interpret graphs/tables, and understand the concept of variables in order to do well in Alg or pre-Alg. The Art of Problem Solving website has some great pre-tests which can help you see where your daughter is (or you can do above grade level testing through a talent search, which convinced our school to accelerate my son more than any ability testing). The "regular" math for 6th and 7th grade just seems to go over these basics- percents, ratios, decimals, fractions, reading charts, etc- over and over again for kids who need a lot of repetition. They give the kids lots and lots of algorithms to solve equations (guess and check, draw a picture, estimate, make a table, etc) and if your dd is good at math she'll be ready to jump off a cliff when she had to draw a tree diagram or some other such nonsense instead of just calculating the answer. I think it can be really excruciating, so honestly, if you think that she is capable, but maybe has become bored or forgotten some things, I'd have her review (maybe take those AoPS placement tests) so she isn't bored silly over the next few years.
However, I'd also ask the teacher if this test will be geared towards a specific curriculum. When my ds was skipped ahead in math early on, he was initially given an EM (Everyday Math) test that required him to show things like partial sums or lattice multiplication and he did poorly. It was only after I intervened and asked that he be given a test that didn't rely on him knowing odd ways to solve things (that he hadn't learned) and just relied on him actually knowing how to solve things in the normal way. So, you just want to make sure that the test reflects your dd's knowledge of math, not her knowledge of things specific to your school's math curriculum (and if it is very specific, make sure she reviews that).
