The PiperSport / Sport Cruiser is effectively a Zodiac 601xl wearing some nice grp 'clothes' with some admittedly good engineering refinements.
Like all Chris Heinz designs it has very powerful elevators and somewhat low longitudinal stability. There are advantages in terms of being able to 'protect' the nosewheel - possibly a real need given the very long lever the PS/SC has - but it does mean you have to be careful with pitch.
Given a C152 is about 500kg empty and PS/CS is 340 ish, but has a better payload, the general 'lightness' would be pretty obvious.
In a teaching enviroment perhaps students will be taught to land properly before being let loose?