At school, we have certain math classes for kids in 6th, 7th, and 8th grade. They are the following:

6th grade: Math 6(regular), Pre-Algebra(Map scores of 240 above), and Algebra 1(For 7th graders(Map scores 250 above).

7th graders: Algebra 1(For 7th graders) and Algebra 1(For 8th graders(256 MAP Score)

8th: Algebra 1(For 8th graders), Algebra 2(260 above MAP Score)

The reason that there are Algebra 1 for 7 and 8 grade is because if you take Algebra 1 in 6th grade, you have no math classes in 8th so they separate them into to classes. Algebra 1 7th grade covers chapters 1-6. Algebra 1 8th grade covers 5-13. My question is that recently, I took the NWEA MAP test and I scored a 284 and I am in the 7th grade. Most of my friends scored in the 220-265 and only 6 of them are in Algebra for 8th grade. I was placed in Algebra for 7th grade so should I be in Algebra 1 8th grade or stay in Algebra 7th grade because I scored higher than my 6 friends who are in Algebra 1 8th grade. I am really confused so if you could help, it would be very appreciated.
Thank