This is incorrect, and is a Blatant Violation of Utah Law.
Utah Law states:
76-10-505.5. Possession of a...Firearm..., on or about School Premises..., Penalties.
(1) A Person may not possess any Firearm..., as th[at] term [is] defined in Section 76-10-501, at a place that the person knows, or has reasonable cause to believe, is on or about School Premises as defined in Subsection 76-3-203.2(1).
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(b) Possession of a Firearm...,on or about School Premises is a class A misdemeanor.
(3) This Section does not apply if:
(a) The Person is Authorized to Possess a Firearm as provided under Section 53-5-704, 53-5-705, 76-10-511, or 76-10-523, or as otherwise Authorized by Law.
Both Utah State Law 76-10-523 AND Federal Law 18 U.S.C 922(q)(2)(B)(ii) exempt Utah Permit holders from 'School Zone Firearm-Free Zones' throughout Utah.