Mini puissance

[MiniMilton]

I just started jumping my mini today, which is possibly the cutest thing ever. There's a mini puissance coming up in December and the entries have to be in this month. Anybody have any idea what height the jump would usually go up to? The class is divided into under 34" and then 34-42". I think my mini is 36" but my measuring stick doesn't go low enough to find out!
The entries are pricey so I don't want to be out on the first round.
Thanks