Pfffffff..... I think participles and gerunds and all that is at LEAST third year. When you say studying these concepts, do you mean gaining an understanding of them, or learning to apply them to all your vocabulary? Because understanding them doesn't really take a year in in my opinion, you should be fine.

Most of those things are just forms you already know, with a predictable change to the ending. And knowing when to use participles and gerund isn't too hard; you just don't in speech, and if you have the vocabulary, they probably are super flexible and delightful when writing. Honestly, basic conjugations and vocab are the real difficulties in learning russian solitarily to me.

From what I can tell, past passive and past adverbial forms are the end of the road. Maybe they would start in on formal speech from there? Even that isn't incredibly complicated, then again, it's school, so they'll take an entire year to teach it.
http://learnrussian.rt.com/grammar-tables/ If you know every concept on this list, I dont know of anything more advanced than this. I can't imagine what could be.