GANTS, C.J.

During a varsity baseball game between two high school teams at a public park in the town of Hudson (town), the plaintiff, a ballplayer with the visiting team, seriously injured his knee while warming up in the bullpen. The plaintiff filed suit in the Superior Court against the town under the Massachusetts Tort Claims Act, G. L. c. 258 (act), alleging that his injury was caused by the town's negligence and its wanton and reckless conduct in allowing the visiting team to use a dangerous bullpen. The judge allowed the town's motion for summary judgment, concluding that the evidence did not support a finding of wanton or reckless conduct, and that the plaintiff's negligence claim was barred by the recreational use statute, G. L. c. 21, § 17C, where the injury occurred on a baseball field owned by the town that it allowed the public to use without a fee, and where the town had no "special relationship" with the plaintiff because he was a student from a visiting high school rather than the town's own high school. We conclude that the town could be found liable for negligence despite the recreational use statute because, where a town's school invites another town's school to play an athletic match on a town field, the town owes the visiting student-athletes the same duty to provide a reasonably safe playing field that it owes to its own students. We also conclude that there was no failure of presentment under § 4 of the act, and that it cannot be determined until trial whether liability is barred by the discretionary function exemption in § 10 (b) of the act. We therefore reverse the allowance of the motion for summary judgment and remand the case to the Superior Court for trial.2

Background. We recite the undisputed facts in the summary judgment record. Hudson High School (Hudson) hosted a varsity baseball game against Milford High School (Milford) on the night of May 15, 2010.3 The game was played at Riverside Park, a public park in the town maintained by the town's department of public works.4 The plaintiff, a member of the visiting Milford team, alleges as follows:

The bullpen was designed and constructed by a former town employee, and was maintained by the town and by student athletes.

As required under § 4 of the act, the plaintiff sent a letter to the town board of selectmen on December 10, 2010, reciting the above-quoted allegations, notifying them that he was asserting a claim against the town, and making demand of $100,000 for his "injuries, pain and suffering and medical expenses." The letter alleged that the town had "engaged in willful, wanton or reckless conduct," and had committed a breach of its "duty of reasonable care to visiting high school baseball players and was negligent in allowing them to utilize the . . . bullpen area." The letter further alleged that the "bullpen area" was "inherently dangerous" in three ways:

After the town's insurer denied the plaintiff's claim, the plaintiff brought this action, claiming that the town had committed a breach of its "duty of reasonable care" and "engaged in willful, wanton and reckless conduct" by "allowing a `bullpen' area to be accessed by [the plaintiff] that was poorly constructed, maintained and illuminated, all without any posted warnings." After the town's motion for summary judgment was allowed by the judge, the plaintiff appealed, and we transferred the case to this court on our own motion.

Discussion. 1. Recreational use statute.

Murray challenges the judge's ruling that the recreational use statute bars his negligence claim against the town. The recreational use statute, G. L. c. 21, § 17C, was enacted in 1972 "to encourage landowners to permit broad, public, free use of land for recreational purposes by limiting their obligations to lawful visitors under the common law." Ali v. Boston, 441 Mass. 233, 238 (2004). General Laws c. 21, § 17C (a), provides, in relevant part:

The statute makes recreational users a "discrete subgroup of lawful visitors owed only the standard of care applicable to trespassers: that is, landowners must refrain from wilful, wanton, or reckless conduct as to their safety." Ali, supra at 237. Because landowners do not owe recreational users the reasonable duty of care owed to other lawful visitors, they may not be found liable to them for ordinary negligence. See id. Government landowners that provide free access to their land for public use are protected from liability by G. L. c. 21, § 17C, to the same extent as private landowners. See G. L. c. 21, § 17C (b) (including "any governmental body, agency or instrumentality" within meaning of term "person").6 The town is thus a proper party to invoke the recreational use statute.

The original legislative purpose of the recreational use statute was to encourage landowners to give the public free access to their land for recreational purposes by protecting them from negligence claims if a member of the public were to be injured on the land.7 It was not intended to diminish the duty of care that a school owes its students to provide reasonably safe school premises for school-related activities, including interscholastic sports. "Personal injury from defective premises . . . is not a risk that schoolchildren should, as matter of public policy, be required to run in return for the benefit of a public education." Whitney v. Worcester, 373 Mass. 208, 223 (1977). See Alter v. Newton, 35 Mass.App.Ct. 142, 145 (1993) ("Because of the relationship between a school and its students, the city had a duty of care to the plaintiff to provide her with reasonably safe school premises").8 Therefore, the recreational use statute does not alter the standard of care that a school owes its own students arising from its special relationship with its students, and would not protect the town from liability for negligence claims brought against it by students enrolled in its own public schools for injuries sustained while the students were engaged in school-related activities. See id. at 149, quoting Bauer v. Minidoka Sch. Dist. No. 331, 116 Idaho 586, 588-589 (1989) ("`if the recreational use statute were applied to injuries children suffered while on school premises as students,' the special relationship of the school to its students would be substantially impaired").9 Cf. Wilkins v. Haverhill, 468 Mass. 86, 91 n.9 (2014), quoting Ali, 441 Mass. at 236 (because municipalities need no "encouragement to open their schools for parent-teacher conferences," applying recreational use statute to parent's slip and fall on ice in school walkway on parent-teacher night "would upend the balance that the Legislature intended to strike `between encouraging public access to private land and protecting landowners from liability for injuries'").

If the baseball game between the Hudson and Milford teams had been played on a field on the Hudson grounds, it would be plain that the town owed a duty to its students to maintain the field in a reasonably safe condition. That duty remains where, as here, Hudson chooses to play its home interscholastic baseball games in a town park off the high school grounds.

The town does not dispute that, if a Hudson pitcher had been injured warming up in the home team bullpen, the recreational use statute would not shield the town from liability for negligence because of the special relationship the town has with its own students. But the town argues, and the judge concluded, that because the plaintiff was a pitcher on the visiting team and not a student at Hudson, there was no "special relationship" between the plaintiff and the town "that stands in the way of the normal operation of the recreational use statute." The consequence of such a ruling would be that the town owes a duty of care to maintain a reasonably safe bullpen for the home team, but need only avoid wilful, wanton, or reckless conduct in maintaining the visiting team's bullpen. This not only would be poor sportsmanship; it would be bad law.

Hudson has chosen to offer interscholastic baseball as a school-related activity for its students, but it can do so only if other schools agree to compete against it; otherwise, Hudson high school could offer only intramural baseball. Where the town, as it did here, invites a school like Milford to play a baseball game on the town's home field, thereby enabling Hudson students to play interscholastic baseball, the town owes the students on the visiting team the same duty of care to provide a reasonably safe playing field that it owes its own students. Where the recreational use statute does not shield the town from liability for negligence resulting in injuries to its own public school students, the statute also does not shield the town from liability for negligence resulting in injuries to visiting student-athletes. See Morales v. Johnston, 895 A.2d 721, 724, 731 (R.I. 2006) (despite recreational use statute, town owed visiting student-athlete "a special duty of care to protect her from a dangerous condition on the athletic field"). Cf. Avila v. Citrus Community College Dist., 38 Cal.4th 148, 161-162 (2006) (despite doctrine of assumption of risk, "the host school and its agents owe a duty to home and visiting players alike to . . . not increase the risks inherent in the sport").

The judge rested his ruling in part on Kavanagh v. Trustees of Boston Univ., 440 Mass. 195, 196 (2003), where a Boston University basketball player during an intercollegiate basketball game punched and broke the nose of an opposing player. In that case, we affirmed the grant of summary judgment in favor of Boston University, noting that the university owed no duty to protect the plaintiff from third-party conduct absent a "special relationship" between the plaintiff and Boston University, and concluding that a college's "special relationship" with its own students does not extend to student-athletes from a different college. Id. at 201-203. We need not consider here whether to revisit that precedent, which did not involve the recreational use statute, because the issue in that case was whether the university was negligent in failing to protect the plaintiff from third-party conduct, not whether the university was negligent in failing reasonably to provide a safe basketball court. Had the plaintiff in that case been injured by falling on an unreasonably unsafe basketball floor, our analysis might have been quite different.

For these reasons, we conclude that, despite the recreational use statute, the town may be found liable for negligence in providing the pitchers from the opposing team with a bullpen that was not reasonably safe.10

2. Massachusetts Tort Claims Act. The town also argues that the plaintiff did not comply with the act's presentment requirement, G. L. c. 258, § 4, because the plaintiff's presentment letter to the town raised only a "negligent design" theory, and did not also raise the "negligent maintenance" theory alleged in his complaint. Further, the town argues that it is not liable for "negligent design," because the design of the bullpen was a "discretionary function" falling within the act's discretionary function exception, G. L. c. 258, § 10 (b). The motion judge did not reach either of these arguments. Because our review of a motion for summary judgment is de novo, see Roman v. Trustees of Tufts College, 461 Mass. 707, 711 (2012), and because we may affirm an allowance of summary judgment on grounds other than those reached by the judge, see id., we address these arguments here.

Under the act, G. L. c. 258, § 4, "[a] civil action shall not be instituted against a public employer on a claim for damages [under the act] unless the claimant shall have first presented his claim in writing to the executive officer of such public employer. . . ." "This strict presentment requirement is a statutory prerequisite for recovery under the [a]ct." Shapiro v. Worcester, 464 Mass. 261, 267 (2013). Its purpose is to "ensure[] that the responsible public official receives notice of the claim so that the official can investigate to determine whether or not a claim is valid, preclude payment of inflated or nonmeritorious claims, settle valid claims expeditiously, and take steps to ensure that similar claims will not be brought in the future." Richardson v. Dailey, 424 Mass. 258, 261 (1997), quoting Lodge v. District Attorney for the Suffolk Dist., 21 Mass.App.Ct. 277, 283 (1985). See Shapiro, supra at 268. See also Estate of Gavin v. Tewksbury State Hosp., 468 Mass. 123, 131-135 (2014).

A presentment letter should be precise in identifying the legal basis of a plaintiff's claim, but it is adequate if it sets forth sufficient facts from which public officials reasonably can discern the legal basis of the claim, and determine whether it states a claim for which damages may be recovered under the act. See Gilmore v. Commonwealth, 417 Mass. 718, 723 (1994) ("While a presentment letter should be precise in identifying the legal basis of a plaintiff's claim, [the plaintiff's] letters . . . were not so obscure that educated public officials should find themselves baffled or misled with respect to" claim being asserted). Here, the presentment letter identified the legal basis of the plaintiff's claims as negligence and wilful, wanton, or reckless conduct; it did not characterize the specific theory of negligence, and did not use the terms "negligent design" or "negligent maintenance." The letter claimed that the town was negligent in allowing the visiting players to use a bullpen that was "inherently dangerous," and described what made the bullpen dangerous, noting specifically the width of the pitching mound in the visiting team's bullpen, the use of wooden "timbers" to enclose the pitching mound, and the poor quality of lighting.11 It is not apparent from these allegations in the presentment letter that liability in this case would rest solely on the "design" of the bullpen. We conclude that the presentment letter provided the town with adequate notice of the circumstances of the plaintiff's negligence claim — without limitation to any specific theory of negligence — and that the town reasonably could investigate those circumstances and determine whether the town might be liable on the claim under the act. See McAllister v. Boston Hous. Auth., 429 Mass. 300, 305 n.7 (1999), overruled on other grounds by Sheehan v. Weaver, 467 Mass. 734 (2014) (where presentment letter only explicitly raised one of plaintiff's theories of liability, presentment requirement was satisfied with respect to all theories because "executive officer had the opportunity to investigate the circumstances of each claim, as all theories of liability argued by the plaintiff were based on the same facts").

Having concluded that the plaintiff's presentment letter does not limit the plaintiff to a "negligent design" theory, we also conclude that the town is not entitled to summary judgment based on its claim that the town is immune from liability on a "negligent design" theory under the act's discretionary function exception.12 It is not apparent from the summary judgment record that the plaintiff intends to rest solely on that theory. Nor is it apparent from the summary judgment record that the width of the mound and the enclosure of the mound by wooden "timbers" are the type of design decisions that fall within the discretionary function exception. See Barnett v. Lynn, 433 Mass. 662, 664 (2001), quoting Patrazza v. Commonwealth, 398 Mass. 464, 467 (1986) ("Generally, such discretionary conduct is `characterized by the high degree of discretion and judgment involved in weighing alternatives and making choices with respect to public policy and planning'"). The issue whether some or all of the plaintiff's claims come within the discretionary function exception cannot be resolved until the judge can determine whether the plaintiff rests liability on a negligent design theory and, if so, whether the decisions concerning the design of the bullpen constitute the type of discretionary policy-making and planning by government officials that is protected by sovereign immunity. See Greenwood v. Easton, 444 Mass. 467, 470 (2005) ("Deciding whether particular discretionary acts involve policy making or planning depends on the specific facts of each case"); Alter, 35 Mass. App. Ct. at 148 ("the application of the discretionary function exception is a question of law for the court").

Conclusion. We reverse the order granting summary judgment in favor of the defendants, and remand the case to the Superior Court for trial.

So ordered.