sometimes the instructor does stalls at a high AOA just because they enjoy them..........
Ummm...
ALL stalls are done at the stalling AoA. That's what a stall is! You cannot do one at a greater AoA (it will already have stalled at stall AoA) or at a lesser AoA (it hasn't yet reached stall AoA).
And of course stalling at the top of a loop (or anywhere else in the loop - the Yak did it readily during second half!) is almost certainly an erect stall despite the aeroplane being upside down - unless you are pushing forward quite hard on the stick which is most unlikely at that point.
Regarding the OP, stalls for the flight test are pretty benign IIRC and your instructor will have shown you (and got you to show him) the correct technique, else you wouldn't be being put forward for the test.