Michelle Wilkins was injured when she slipped and fell on ice that had accumulated on the walkway of a public school owned and operated by the city of Haverhill (city). At *87the time of the fall, early in the evening of February 10, 2011, Wilkins was on the city’s premises to attend a scheduled parent-teacher conference. Wilkins filed a complaint in the Superior Court against the city alleging that its negligence caused her injuries. In its motion for summary judgment, the city raised as a defense G. L. c. 21, § 17C, which bars claims of ordinary negligence against a landowner, including a government entity, that has opened its land to the public for recreational, educational, or other enumerated purposes, without charging a fee. A Superior Court judge allowed the city’s motion; Wilkins appealed, and we allowed her application for direct appellate review. Because we conclude that the limitation on liability provided by G. L. c. 21, § 17C, extends solely to land open to the general public, and during the relevant time the school was open only to a discrete group and not to the general public, we reverse.1

Discussion, a. Standard of review. “Summary judgment is appropriate where there are no genuine issues of material fact and the moving party is entitled to judgment as a matter of law.” HipSaver, Inc. v. Kiel, 464 Mass. 517, 522 (2013). See Mass. R. Civ. P. 56 (c), as amended, 436 Mass. 1404 (2002). We review a grant of summary judgment de nova. HipSaver, Inc. v. Kiel, supra.

b. Public use statute. This case requires us to interpret the scope of the public use statute, G. L. c. 21, § 17C.2 “We interpret a statute according to ‘all its words construed by the ordinary and approved usage of the language, considered in connection with the cause of its enactment, the mischief or imperfection to be remedied and the main object to be accomplished, to the end that the purpose of its framers may be effectuated.’ ” Johnson v. Kindred Healthcare, Inc., 466 Mass. 779, 783 (2014), quoting Board of Educ. v. Assessor of Worcester, 368 Mass. 511, 513 (1975).

In relevant part, G. L. c. 21, § 17C (a), provides:

“Any person having an interest in land including the *88structures, buildings, and equipment attached to the land . . . who lawfully permits the public to use such land for recreational, conservation, scientific, educational, environmental, ecological, research, religious, or charitable purposes without imposing a charge or fee therefor, . . . shall not be liable for personal injuries or property damage sustained by such members of the public . . . while on said land in the absence of wilful, wanton, or reckless conduct by such person.”3

The city argues that Wilkins’s claim is barred because she is “a member of the public” and her attendance at a parent-teacher conference qualifies as an “educational” purpose within the meaning of the statute. The city concedes that the school was not open to the general public at the time of Wilkins’s fall, but asserts that by holding parent-teacher conferences that are open to a part of the community •— parents of students enrolled at the school — it has met the statute’s threshold requirement that the landowner permit use of the land by “the public.” See G. L. c. 21, § 17C (a). We do not agree that admission by such a delimited group meets the statute’s threshold requirement.4

The plain and ordinary meaning of the term “the public” connotes broad public access and contemplates access by members of the community as a whole. See Black’s Law Dictionary 1348 (9th ed. 2009) (defining “public” when used as noun as “[t]he people of a nation or community as a whole”); Webster’s Ninth New Collegiate Dictionary 952 (1991) (“public” means “the people as a whole”). See also Wellesley College v. Attorney Gen., 313 Mass. 722, 732 (1943) (college did not serve meals to “the public” for purposes of tax statute where dining accommodations were “restricted to a small, well defined number of classes”). Without establishing a general rule, a number of prior appellate decisions have indicated that *89to be entitled to the public use statute’s immunity from claims of ordinary negligence, a landowner must permit all members of the general public to have free and equal access to the land for one or more of the enumerated activities.5 See Ali v. Boston, 441 Mass. 233, 235-236 (2004), citing 1967 Senate Doc. No. 1136, at 15-16 (public use statute intended to address increasing demand by “the general public” for recreational land); Seich v. Canton, 426 Mass. 84, 86 (1997) (public use statute applicable because “the plaintiffs, along with any other member of the public, could have gone to the school and observed the basketball game without paying a fee”); Whooley v. Commonwealth, 57 Mass. App. Ct. 909, 910 (2003) (statute applied because plaintiff “was no different from any other member of the public” who could enter ice rink and watch hockey game without paying fee).

This interpretation accords with the Legislature’s “very purpose” of “encouraging] landowners to permit broad, public, free use of land” for such recreational or other activities.6 See Ali v. Boston, supra at 238. Adopting the city’s view that “the public” may include only a subset of the community would expand the statutory immunity from negligence beyond that which the Legislature intended by granting such immunity whenever a landowner invites a group of people onto the landowner’s property for a recreational or other listed activity *90free of charge. Such a construction would nullify the general rule that “[a]n owner or possessor of land owes a common-law duty of reasonable care to all persons lawfully on the premises,” Dos Santos v. Coleta, 465 Mass. 148, 154 (2013), citing Davis v. Westwood Group, 420 Mass. 739, 743 (1995), and would conflict with the Legislature’s intent that individuals owed a lesser duty of care under the statute constitute only “a discrete subgroup” of the broader category of “lawful visitors,” who are owed the ordinary duty of reasonable care. See Ali v. Boston, supra at 237.7

As a corollary to the requirement that a landowner must open the land to the public for certain enumerated purposes, the public use statute’s immunity applies only to “such members of the public” who enter the property for the purposes for which the owner has permitted general access. See G. L. c. 21, § 17C (a); Marcus v. Newton, 462 Mass. 148, 155 (2012); Ali v. Boston, supra at 237-238. The statute does not apply if the injured party possessed some “other special permission or authorization” to be there. Dunn v. Boston, 75 Mass. App. Ct. 556, 560 (2009). See Alter v. Newton, 35 Mass. App. Ct. 142, 149 (1993) (public use statute did not apply to injury at school where “the plaintiff was not just a member of the public, but was ... a student to whom [the city] owed a duty of care”).

Here, the city has not shown that Wilkins entered on the school premises to participate in an educational or other enumerated activity open to the general public. Wilkins entered the property to attend a parent-teacher conference, an activity in which only the student, the student’s parents, and the teacher may participate.8 Even assuming that the city opened the school to all parents with students enrolled there, such an invitation *91still would apply only to a discrete segment of the general public. As the city concedes, the school was closed to individuals without enrolled students. The city argues that Wilkins’s attendance afforded her an opportunity to participate in her child’s educational experience, and that ;“[s]uch participation benefits not only the parent but the child as well.” That a school serves a general educational purpose, however, does not suffice to put it within the public use statute. We do not agree that the benefit to the parent of a parent-teacher conference, albeit indirectly related to the child’s education, constitutes an educational purpose for the parent within the meaning of the public use statute. In any event, such a benefit does not convert the activity into one that is open to the general public.9

Judgment reversed.