Hello!
I have noticed that the spell "Freeze" belongs to the conjuration school.
I believe that it should be placed under "Evocation" due to its nature.
In addition, it is countered by "Scorching Ray" which is also Evocation.
Right now, being considered Conjuration, Elementalists who would possibly be the biggest users of this spell do not choose it, since they focus mostly on Evocation spells.
Thank you!