The right turn comes from the right-thrust built into the firewall & the left engine offset, as it is factory mounted. It gives the correct engine offset & thrust angle to make the plane track straight at ~ 1/3 - 1/2 throttle, where beginners will be doing much of their flying. The right thrust is excessive for full power operation (like take-off) and must be countered with a bit of left rudder (not left aileron) until the throttle is backed off to low-medium cruise power. Your instructors can easily handle this situation (maybe even hardly notice it), but it is a challenge to some students.

The mechanical "fix" is to straighten the right-thrust by shimming the right side of the engine mount, but don't bother "correcting" the engine offset (it is mounted left of centerline).

As I noted in another thread, the NexStar flies perfectly well with zero right thrust & zero engine offset -- but it will pull left on take-off when configured that way.