(c) Subdivision (b) does not apply to the possession of a firearm under any of the following circumstances:

1. (1) Within a place of residence or place of business or on private property, if the place of residence, place of business, or private property is not part of the school grounds and the possession of the firearm is otherwise lawful.

2. (2)

   1. (A) When the firearm is an unloaded pistol, revolver, or other firearm capable of being concealed on the person is within a locked container in a motor vehicle or is within the locked trunk of a motor vehicle at all times.
   2. (B) This section does not prohibit or limit the otherwise lawful transportation of any other firearm, other than a pistol, revolver, or other firearm capable of being concealed on the person, in accordance with state law.
3. (3) When the person possessing the firearm reasonably believes that they are in grave danger because of circumstances forming the basis of a current restraining order issued by a court against another person or persons who has or have been found to pose a threat to their life or safety. This subdivision does not apply when the circumstances involve a mutual restraining order issued pursuant to Division 10 (commencing with Section 6200) of the Family Code absent a factual finding of a specific threat to the person’s life or safety. Upon a trial for violating subdivision (b), the trier of a fact shall determine whether the defendant was acting out of a reasonable belief that they were in grave danger.
4. (4) When the person is exempt from the prohibition against carrying a concealed firearm pursuant to Section 25615, 25625, 25630, or 25645.
5. (5) When the person holds a valid license to carry the firearm pursuant to Chapter 4 (commencing with Section 26150) of Division 5 of Title 4 of Part 6, who is carrying that firearm in an area that is within a distance of 1,000 feet from the grounds of the public or private school, but is not within any building, real property, or parking area under the control of a public or private school providing instruction in kindergarten or grades 1 to 12, inclusive, or on a street or sidewalk immediately adjacent to a building, real property, or parking area under the control of that public or private school. Nothing in this paragraph shall prohibit a person holding a valid license to carry the firearm pursuant to Chapter 4 (commencing with Section 26150) of Division 5 of Title 4 of Part 6 from carrying a firearm in accordance with that license as provided in subdivisions (b), (c), or (e) of Section 26230.

(d) Except as provided in subdivision (b), it shall be unlawful for any person, with reckless disregard for the safety of another, to discharge, or attempt to discharge, a firearm in a school zone as defined in paragraph (4) of subdivision (e).

The prohibition contained in this subdivision does not apply to the discharge of a firearm to the extent that the conditions of paragraph (1) of subdivision (c) are satisfied.

(e) As used in this section, the following definitions shall apply:

1. (1) “Concealed firearm” has the same meaning as that term is given in Sections 25400 and 25610.
2. (2) “Firearm” has the same meaning as that term is given in subdivisions (a) to (d), inclusive, of Section 16520.
3. (3) “Locked container” has the same meaning as that term is given in Section 16850.
4. (4) “School zone” means an area in, or on the grounds of, a public or private school providing instruction in kindergarten or grades 1 to 12, inclusive, or within a distance of 1,000 feet from the grounds of the public or private school.

(f)

1. (1) A person who violates subdivision (b) by possessing a firearm in, or on the grounds of, a public or private school providing instruction in kindergarten or grades 1 to 12, inclusive, shall be punished by imprisonment pursuant to subdivision (h) of Section 1170 for two, three, or five years.

2. (2) A person who violates subdivision (b) by possessing a firearm within a distance of 1,000 feet from the grounds of a public or private school providing instruction in kindergarten or grades 1 to 12, inclusive, shall be punished as follows:

   1. (A) By imprisonment pursuant to subdivision (h) of Section 1170 for two, three, or five years, if any of the following circumstances apply:

      1. (i) If the person previously has been convicted of any felony, or of any crime made punishable by any provision listed in Section 16580.
      2. (ii) If the person is within a class of persons prohibited from possessing or acquiring a firearm pursuant to Chapter 2 (commencing with Section 29800) or Chapter 3 (commencing with Section 29900) of Division 9 of Title 4 of Part 6 of this code or Section 8100 or 8103 of the Welfare and Institutions Code.
      3. (iii) If the firearm is any pistol, revolver, or other firearm capable of being concealed upon the person and the offense is punished as a felony pursuant to Section 25400.
   2. (B) By imprisonment in a county jail for not more than one year or by imprisonment pursuant to subdivision (h) of Section 1170 for two, three, or five years, in all cases other than those specified in subparagraph (A).
3. (3) A person who violates subdivision (d) shall be punished by imprisonment pursuant to subdivision (h) of Section 1170 for three, five, or seven years.

(g)

1. (1) A person convicted under this section for a misdemeanor violation of subdivision (b) who has been convicted previously of a misdemeanor offense enumerated in Section 23515 shall be punished by imprisonment in a county jail for not less than three months, or if probation is granted or if the execution or imposition of sentence is suspended, it shall be a condition thereof that they be imprisoned in a county jail for not less than three months.
2. (2) A person convicted under this section of a felony violation of subdivision (b) or (d) who has been convicted previously of a misdemeanor offense enumerated in Section 23515, if probation is granted or if the execution of sentence is suspended, it shall be a condition thereof that they be imprisoned in a county jail for not less than three months.
3. (3) A person convicted under this section for a felony violation of subdivision (b) or (d) who has been convicted previously of any felony, or of any crime made punishable by any provision listed in Section 16580, if probation is granted or if the execution or imposition of sentence is suspended, it shall be a condition thereof that they be imprisoned in a county jail for not less than three months.
4. (4) The court shall apply the three-month minimum sentence specified in this subdivision, except in unusual cases where the interests of justice would best be served by granting probation or suspending the execution or imposition of sentence without the minimum imprisonment required in this subdivision or by granting probation or suspending the execution or imposition of sentence with conditions other than those set forth in this subdivision, in which case the court shall specify on the record and shall enter on the minutes the circumstances indicating that the interests of justice would best be served by this disposition.

(o) This section does not apply to an honorably retired peace officer authorized to carry a concealed or loaded firearm pursuant to any of the following:

1. (1) Article 2 (commencing with Section 25450) of Chapter 2 of Division 5 of Title 4 of Part 6.
2. (2) Section 25650.
3. (3) Sections 25900 to 25910, inclusive.
4. (4) Section 26020.
5. (5) Paragraph (2) of subdivision (c) of Section 26300.

(q)

1. (1) This section does not apply to the activities of a program involving shooting sports or activities, including, but not limited to, trap shooting, skeet shooting, sporting clays, and pistol shooting, that are sanctioned by a school, school district, college, university, or other governing body of the institution, that occur on the grounds of a public or private school or university or college campus.
2. (2) This section does not apply to the activities of a state-certified hunter education program pursuant to Section 3051 of the Fish and Game Code if all firearms are unloaded and participants do not possess live ammunition in a school building.