Part 8 Follows the Double Seven Arc
Part 9 Follows the Steeplechase Arc (Isnt completely uploaded yet yet) i am sad
Covers the 10th Arc (Ancient City Insurrection) Ongoing upload
Covers 11th Arc (Yotsuba Succession) Ongoing Upload
Covers The 12th Arc (Master Clans Conference) Ongoing Upload i guess
Other Manga volumes covering the other arcs haven't been released yet I think at this point in time I dunno ill read them when they're completed
I guess this covers the first couple of arcs Im guessing?
If you wish to go read the novel
https://novelsonline.net/mahouka-koukou-no-rettousei (Up to Vol 32.5) The Final arc -Graduation and Sacrifice Arc
https://www.novels.pl/novel/Mahouka-Koukou-no-Rettousei (Only up to Vol 25)
https://novelsonline.net/mahouka-koukou-no-rettousei/volume-11-visitor-iii/chapter-17-2 (At the end of the chapter season 2 of the anime ends)
Ch 31
Mahouka Koukou no Rettousei - Raihousha Hen