I
The hearing officer whose findings were adopted by SERB determined that the house officers were not students excluded from the operation of the Public Employees’ Collective Bargaining Act pursuant to R.C. 4117.01(C)(11). A preliminary issue concerns the nature of this determination. The appellate court, while concluding that such determinations are questions of fact, nevertheless held that the trial court’s reversal of the order did not constitute an abuse-of-discretion. Although conceding that SERB’s order was supported by substantial evidence, the court concluded the abuse-of-discretion standard of review dictated affirmance of the judgment of the common pleas court.
R.C. 4117.13(D) governs appeals of SERB’s orders to courts of common pleas. It provides in relevant part:
“Any person aggrieved by any final order of the board granting or denying, in whole or in part, the relief sought may appeal to the court of common pleas of any county where the unfair labor practice in question was alleged to have been engaged in, or where the person resides or transacts business, by filing in the court a notice of appeal setting forth the order appealed from and the grounds of appeal * * *.
*343“The court has exclusive jurisdiction to grant the temporary relief or restraining order it considers proper, and to make and enter a decree enforcing, modifying, and enforcing as so modified, or setting aside in whole or in part the order of the board. The findings of the board as to the facts, if supported by substantial evidence on the record as a whole, are conclusive." (Emphasis added.)
In Lorain City Bd. of Edn. v. State Emp. Relations Bd. (1988), 40 Ohio St.3d 257, 260, 533 N.E.2d 264, 266, this court described the extremely deferential standard of review applied to factual determinations of SERB pursuant to R.C. 4117.13(D). We observed therein that disputes as to conflicting evidence “ * * * are properly determined by SERB, which was designated by the General Assembly to facilitate an amicable, comprehensive, effective labor-management relationship between public employees and employers. State, ex rel. Dayton Fraternal Order of Police Lodge No. 44, v. State Emp. Relations Bd. (1986), 22 Ohio St.3d 1, 5, 22 OBR 1, 4, 488 N.E.2d 181, 184-185. As long as SERB’s decision on such matters is supported by substantial evidence, it must be affirmed. Courts should not be required to intervene in every factual dispute between contesting parties.”
When undertaking a review of an order of adjudication rendered by an administrative agency, a court of common pleas acts in a limited appellate capacity. See, generally, Andrews v. Bd. of Liquor Control (1955), 164 Ohio St. 275, 279-280, 58 O.O. 51, 53-54, 131 N.E.2d 390, 393-394.
Accordingly, while resolution of conflicting evidence is the province of SERB, the determination of whether the order of the agency can withstand the standard of review prescribed by R.C. 4117.13(D) is essentially a question of law for the court of common pleas. As such, a reviewing court which seeks to ascertain whether the common pleas court has applied the appropriate standard of review to SERB’s factual findings is not compelled to adhere to the conclusion reached by the common pleas court. Rather, it is the prerogative and the responsibility of the court entertaining the appeal to investigate whether the lower court accorded due deference to the factfinder. This is not unlike the function performed by this court in Seasons Coal Co. v. Cleveland (1984), 10 Ohio St.3d 77, 10 OBR 408, 461 N.E.2d 1273, and in Cohen v. Lamko, Inc. (1984), 10 Ohio St.3d 167, 10 OBR 500, 462 N.E.2d 407, and prescribed by R.C. 119.12 for courts of appeals.3 Where the common pleas *344court has not properly deferred to the factual determinations of the agency as required by R.C. 4117.13(D), it is within the authority of the appellate court to reverse the lower court and reinstate the order of the agency.
We therefore hold that the conclusion by a court of common pleas that an order of the State Employment Relations Board is not supported by substantial evidence on the record is a legal determination fully reviewable by the court of appeals.
II
Inasmuch as R.C. 4117.13(D) is the appropriate standard of review, the trial court committed an error of law if it reversed SERB’S order despite substantial evidence in the record to support the order. Perusal of the relevant facts leaves little doubt that there was sufficient evidence to support SERB’S determination. It was the conclusion of the hearing officer that the primary purpose of the house officers was not educational training but rather patient care. Depending upon the reference point, seventy-five percent (based on testimony) or ninety-five percent (based on documentary evidence) of house officers’ work time was devoted to patient care. The officers were paid regular salary and benefits for which the hospital charged and/or received reimbursement from Medicare. The officers had completed medical school and had received their medical degrees. They derived no academic credit for their activities and were not registered as students with the university.
Moreover, the definition of “students” in R.C. 4117.01(C)(11) describes them, inter alia, as “residents, interns or other students working as part-time public employees less than fifty per cent of the normal year in the employee’s bargaining unit[.]” (Emphasis added.) It is beyond dispute that the house officers devote at minimum seventy-five percent of their time to patient care. Appellee nevertheless contends that the house officers are the residents and interns to which R.C. 4117.01(C)(11) refers. This contention is without merit. *345Instead, the reference is more logically applicable to medical students who perform clinical duties during their tenure in medical school. However, assuming arguendo that such terms apply to house officers, it would be applicable only to those persons who spend less than fifty percent of their time in the bargaining unit. The performance of patient care for seventy-five to ninety-five percent of an eighty-hour week can scarcely be considered part-time employment under the statute.
We therefore further conclude that physicians in the employ of a hospital constituting a “public employer” as defined by R.C. 4117.01(B) who have been awarded their medical degrees but whose provision of care to hospital patients is necessary to obtain state certification in a specialty or subspecialty in medicine are public employees for purposes of R.C. Chapter 4117. Such employees are not “students” exempt from the operation of the Act pursuant to R.C. 4117.01(C)(11).
Inasmuch as there was substantial evidence to support SERB’S order, the trial court erred as a matter of law by failing to affirm an order based on such evidence.
Ill
As an independent basis for its order, SERB determined that the Association was an organization “deemed certified” under Section 4(A) of Am.Sub. S.B. No. 133 inasmuch as it was the preexisting bargaining representative of the house officers. The court of appeals concluded that the Association was not entitled to such status because, in its view, the reference to an “employee organization” in Section 4(A) requires application of the definition thereof in R. C. 4117.01(D). The appellate court further determined that, inasmuch as the officers were not public employees under R.C. 4117.01(C), they could not form an “employee organization” as defined in R.C. 4117.01(D). This determination is erroneous. Section 4(A) specifically provides for the grandfathering of existing bargaining representatives “[notwithstanding any other provision of this act.” Accordingly, reference to R.C. 4117.01(D) to determine what constitutes a preexisting employee organization is at odds with the plain language of Section 4(A).
Moreover, Section 4(A) of Am.Sub.S.B. No. 133 was effective on October 6, 1983. R.C. 4117.01(D) was not effective until April 1, 1984. It is anomalous to suggest that a section of the law can derive its meaning from a definition which was not in existence on its effective date. Therefore, an independent basis for affirmance of SERB’s determination is that the Association constitutes an organization “deemed certified” pursuant to Section 4(A) of Am.Sub. S. B. No. 133.
*346Accordingly, the judgment of the court of appeals is reversed and the cause is remanded to SERB for reinstatement of its order.
Judgment reversed and cause remanded.
Douglas, H. Brown and Resnick, JJ., concur. Moyer, C.J., Holmes and Wright, JJ., dissent.. Thus, R.C. 119.12 provides in relevant part:
“The judgment of the court [of common pleas] shall be final and conclusive unless reversed, vacated, or modified on appeal. Such appeals may be taken either by the party or the agency, shall proceed as in the case of appeals in civil actions, and shall be pursuant to the Rules of Appellate Procedure and, to the extent not in conflict with those rules, Chapter 2505. of the *344Revised Code. Such appeal by the agency shall be taken on questions of law relating to the constitutionality, construction, or interpretation of statutes and rules of the agency, and in such appeal the court may also review and determine the correctness of the judgment of the court of common pleas that the order of the agency is not supported by any reliable, probative, and substantial evidence in the entire record." (Emphasis added.)
This standard would obviously apply to appeals of final orders of adjudication rendered by SERB inasmuch as R.C. 4117.02(M) provides:
“Except as otherwise specifically provided in this section, the board is subject to Chapter 119. of the Revised Code, including the procedure for submission of proposed rules to the general assembly for legislative review under division (H) of section 119.03 of the Revised Code.” (Emphasis added.) See Ohio Historical Society v. State Emp. Relations Bd. (1990), 48 Ohio St.3d 45, 46, 549 N.E.2d 157, 158; South Community, Inc. v. State Emp. Relations Bd. (1988), 38 Ohio St.3d 224, 527 N.E.2d 864.