<p>I have Math HL right now, and I can tell you that it’s the hardest math class I’ve taken so far. As far as for difficulty, the curriculum is more in depth compare to AP in some areas. The IB Math HL test is WAY Harddder than AP calculus. Furthermore, the IAs are totally insane, at least for some of them. However, it must be noted that the difficulty also depends on you teacher. Good teachers usually prepare you well for the exams. One thing is certain, IB Math HL is much harder than IB Math SL, even if you don’t include the extended concentration (stats, series and…)</p>