If you give Conte an A for his second season, there is absolutely no way this season of Allegri's can be less than an A, regardless of what happens against Monaco (assuming we don't get blown out). We're crushing the league by a bigger margin, we're in the Coppa Italia final (as opposed to getting knocked out in Semi's by a weak Lazio), and we're in the CL Quarterfinals after thoroughly destroying an in-form Dortmund (6 games unbeaten going into that match).
I'd give his first season an A, and if he had fielded a strong side and won the Coppa it would be an A+, just for the turnaround. Second season an A-/A, because our CL performance was quite impressive, considering our attack was led by Matri, Vuci, Gio, Quags. Third season was definitely no better than a B, more likely a B-/C+. I don't care what we did in Serie A, crashing out of CL group, failing to get EL final in our own stadium, scoring 1 goal over a two-leg tie with Benfica, crashing out in Coppa Italia quarters against Roma. Last season was a massive failure outside of the league.