OPINION
¶ 1 In this appeal we are presented with a question of legislative intent as to the meaning of the phrase “fifteen years of age or under” pursuant to Arizona Revised Statutes (“AR.S.”) section 13-1204(A)(6) (Supp.2009). 1 For the following reasons, we hold that “fifteen years of age or under” includes children who have passed their fifteenth birthday but have not yet reached their sixteenth birthday.
BACKGROUND
¶ 2 In March 2009, the State charged Michelle Munoz by direct complaint with aggravated assault, a class 6 felony, in violation of A.R.S. § 13-1204(A)(6). 2 The charge stemmed from an incident between Munoz and her niece, the victim, in which Munoz allegedly assaulted the victim by pulling her hair and striking her in the face and upper torso. On the date of the incident, Munoz was over eighteen years of age and the vie-tim was three months beyond her fifteenth birthday.
¶ 3 Following the presentation of evidence at the preliminary hearing, counsel for Munoz argued that the victim did not fall within the protection of the aggravated assault statute relating to children who are fifteen years of age or under. Counsel asserted that the victim was “over” the age of fifteen because she was “age fifteen” only on the day of her fifteenth birthday. In response, the prosecutor briefly explained that a child who had passed his fifteenth birthday but had not yet turned sixteen, if questioned about his age, would state his age as fifteen. The superior court disagreed with the State’s position, concluding that “fifteen years of age or under” meant fifteen years old was the cutoff, and that “[ajnything after that, [the victim is] no longer [fifteen][.]” The court therefore dismissed the complaint. The State timely appealed and we have jurisdiction pursuant to AR.S. §§ 12-120.21(A)(1) (2003), 13-4031 (2001) and -4032(1) (Supp.2009).
DISCUSSION
¶ 4 The State asserts that the language of § 13-1204(A)(6) is clear and must be applied as written — to include victims who are under sixteen years of age. Munoz appears to agree with the State’s position as to the statute’s clarity, but she contends that it applies only to those children who are younger than fifteen or have just reached their fifteenth birthday. Munoz alternatively suggests that if the language of the statute is “open to interpretation,” then the rule of lenity applies and the statute should be construed in her favor.
¶ 5 In interpreting statutes, our goal is to determine and give effect to the intent of the legislature.
State v. Garcia,
¶ 6 Contrary to the parties’ assertions, the phrase “fifteen years of age or under” is not necessarily clear and unequivocal. This is evidenced, at least in part, by contrasting interpretations reached by a number of courts from other jurisdictions that have considered the meaning of similar statutory language.
3
.Some courts have found that a clause specifying a particular age “or under” applies to the full year of the stated age.
See, e.g., State v. Carlson,
¶7 Other courts have reached a contrary interpretation.
See, e.g., Gibson v. People,
¶ 8 We may resolve doubt surrounding ambiguous statutes by resorting to statutory interpretation.
Hayes v. Cont’l Ins. Co.,
A. Common Use of the Language
¶ 9 It is fundamental that courts must give words in statutes their ordinary meaning un
*149
less the context or other circumstances suggest a different meaning.
State v. Carter,
¶ 10 In
Shabazz,
the court found that because “the phrase ‘a person [seventeen] years of age or younger’ is written in the disjunctive^]’ ” the legislature intended to protect children seventeen years of age
and
children who are younger than seventeen.
¶ 11 Similarly, in analyzing the statute before us, we cannot discern any evidence of legislative intent to depart from the everyday meaning of the words “fifteen years of age or under.” Under common usage, we typically refer to the age of a person, other than an infant child, in terms of years, not in months or days. Thus, a person who is fifteen years old is “exactly” that age only at the precise moment he was born fifteen years earlier. He continues to be fifteen years old, however, for almost another year, until his sixteenth birthday. We are unaware of any other common or relevant use of the term “years of age.”
See Carlson,
B. Legislative Background
¶ 12 Prior to 1970, the predecessor statute to A.R.S. § 13-1204, 5 A.R.S. § 13-245, stated as follows: “A. An assault or battery is aggravated when committed under any of the following circumstances ... 3. When committed by an adult male upon the person of a female or child, or by an adult female upon the person of a child.” A.R.S. § 13-245 (Supp.1969) (emphasis added). By its plain terms, subsection three was intended to allow a more serious crime, aggravated assault, to be charged if the victim was a child. In 1970, a bill was introduced in the legislature proposing that AR.S. § 13-245 be modified as follows:
A. An assault or battery is aggravated when committed under any of the following circumstances:
3. When committed by a male of eighteen years or more upon a female, or by a person of eighteen years or more upon a child under the age of fifteen.
*150 H.B. 81, 29th Leg., 2d Reg. Sess. (Ariz.1970) (emphasis added). 6 During Committee of the Whole, representatives proposed amending the bill to strike “under,” and to instead insert “or under” before the period. Journal of the House of Representatives, 29th Leg., 2d Reg. Sess. 375 (1970). The bill passed the House of Representatives with the proposed amendment and was ultimately signed into law by the Governor. Id.; see also 1970 Ariz. Sess. Laws, ch. 58, § 1 (2d Reg. Sess.). Thus, § 13-245 was amended to read:
A. An assault or battery is aggravated when committed under any of the following circumstances:
3. When committed by a male of eighteen years or more upon a female, or by a person of eighteen years or more upon a child the age of fifteen years or under.
1970 Ariz. Sess. Laws, ch. 58, § 1 (2d Reg. Sess.) (emphasis added). We assume the House of Representatives intended to change the intended cutoff age when it voted to approve the amendment to the bill from “under the age of fifteen” to “a child the age of fifteen years or under.”
See Lake Havasu City v. Mohave County,
¶ 13 Additionally, § 13-1204 has been amended numerous times in the past thirty years.
7
The legislature has had ample opportunities to alter the language in § 13-1204(A) to apply only to children who have not yet reached their fifteenth birthday, but it has not done so. Moreover, the legislature has used different language in another section of the statute, supporting the notion that the legislature knows what wording to use to describe a separate age classification.
See
A.R.S. § 13-1204(B) (classifying aggravated assault as a class 2 felony under certain situations involving a child who “is under fifteen years of age”). We presume that the legislature intended that these two provisions be treated differently and that “fifteen years of age or under” describes a different age classification than “under fifteen years.”
See Egan v. Fridlund-Horne,
¶ 14 Accepting Munoz’s proffered interpretation would yield a result that defies common sense.
See Collins v. State,
¶ 15 Based on these recognized tools of statutory construction, we determine that the
legislative intent
of § 13-1204(A)(6) is unambiguous. The statutory provision includes children who have passed their fifteenth birthday but not yet reached their sixteenth birthday. Therefore, we do not apply the rule of lenity here.
See Cicoria,
C. Standard Jury Instructions
¶ 16 Our interpretation of A.R.S. § 13-1204(A)(6) is consistent with the standard jury instructions that have been used to inform juries of the applicable aggravated assault classifications in Arizona since 1989.
See State v. Feldstein,
¶ 17 The current Criminal Revised Arizona Jury Instructions include the following aggravated assault instruction: “The crime of aggravated assault requires proof of the following ... The defendant was eighteen years of age or older and the person assaulted had not reached [his/her] sixteenth birthday[.]” Rev. Ariz. Jury Instr. Stand. Crim. 12.04. Although not indicative of legislative intent, the relevant language of these standard jury instructions, which has remained unchanged for more than twenty years, provides additional support of our statutory interpretation of § 13-1204(A)(6).
CONCLUSION
¶ 18 Based on the foregoing, we conclude that the legislature intended to include children who are fifteen but have not yet reached their sixteenth birthday within the scope of the age classification of those victims who are entitled to greater protection under A.R.S. § 13-1204(A)(6). Accordingly, we reverse the superior court’s dismissal of the criminal complaint filed against Munoz and remand for further proceedings.
Notes
. We cite the current version of applicable statutes because no revisions material to this decision have since occurred.
. The statute provides in pertinent part as follows: “A person commits aggravated assault if the person commits assault as prescribed by [A.R.S.] § 13-1203 under any of the following circumstances ... 6. If the person is eighteen years of age or older and commits the assault on a child who is fifteen years of age or under.” (Emphasis added.)
.
See State v. Jordan,
. Other than its use in § 13-1204(A)(6), a specified age, along with the phrase “years of age or under,” is utilized in only one other statute in Arizona. See A.R.S. § 5-331 (2002) (requiring "[a] child twelve years of age or under” on board a watercraft to wear an approved flotation device).
. Chapter 12 of Title 13 was added to the Arizona Revised Statutes in 1977, and thus A.R.S. § 13-245 was incorporated into § 13-1204. See 1977 Ariz. Sess. Laws, ch. 142, § 61 (1st Reg. Sess.).
. In 2007, the language was changed to a "child who is fifteen years of age or under.” 2007 Ariz. Sess. Laws, ch. 47, § 1 (1st Reg. Sess.).
. See, e.g., 1973 Ariz. Sess. Laws, ch. 138, § 3 (1st Reg. Sess.); 1973 Ariz. Sess. Laws, ch. 172, § 33 (1st Reg. Sess.); 1980 Ariz. Sess. Laws, ch. 229, § 15 (2d Reg. Sess.); 1984 Ariz. Sess. Laws, ch. 325, § 2 (2d Reg. Sess.); 1985 Ariz. Sess. Laws, ch. 364, § 14 (1st Reg. Sess.); 1990 Ariz. Sess. Laws, ch. 152, § 1 (2d Reg. Sess.); 1991 Ariz. Sess. Laws, ch. 225, § 2 (1st Reg. Sess.); 1994 Ariz. Sess. Laws, ch. 200, § 12 (2d Reg. Sess.); 1995 Ariz. Sess. Laws, ch. 127, § 1 (1st Reg. Sess.); 1996 Ariz. Sess. Laws, ch. 32, § 1 (2d Reg. Sess.); 1999 Ariz. Sess. Laws, ch. 261, § 16 (1st Reg. Sess.); 2001 Ariz. Sess. Laws, ch. 124, § 3 (1st Reg. Sess.); 2005 Ariz. Sess. Laws, ch. 166, § 3 (1st Reg. Sess.); 2007 Ariz. Sess. Laws, ch. 47, § 1 (1st Reg. Sess.); 2008 Ariz. Sess. Laws, ch. 179, § 1 (2d Reg. Sess.); 2008 Ariz. Sess. Laws, ch. 301, § 52 (2d Reg. Sess.).
. As of 1996, our supreme court no longer gives qualified approval of jury instructions.
State v. Logan,
