Plaintiff, a permanent teacher, appeals a judgment for defendant school district in her mandamus action. Plaintiff sought to compel district to pay back salary to her under an order of the Fair Dismissal Appeals Board “that [plaintiff] be reinstated to a position for which she is qualified ** * FDAB had found that plaintiff was qualified to fill a vacant position in the physical education department and that district had failed to sustain its burden of proof that it had made every effort to transfer her to that position.1 We affirmed FDAB’s order in Bethel School Dist. No. 52 v. Humphreys, 67 Or App 733, 680 P2d 14 (1983) rev den 297 Or 458 (1984). The facts of the underlying dispute are set forth in that opinion. After our decision in Humphreys, district reinstated plaintiff, but it refused to pay her back salary. In this proceeding to compel that payment, both parties filed motions for summary judgment. Plaintiff also moved for partial summary judgment on the issue of liability. The court granted defendant’s motion, denied plaintiff s motions and dismissed plaintiffs complaint. We reverse.

The court was persuaded to rule for defendant, apparently, because an arbitration award, entered before FDAB’s order, had determined that when defendant dismissed plaintiff she was on layoff status under the applicable collective bargaining agreement. District concedes that FDAB’s reinstatement order carried with it the right to any back salary to which plaintiff was entitled, but it asserts that it reinstated *498her to a layoff status that carried no salary. It argues that, under ORS 342.905(6)(a),2 a teacher who is reinstated after having been laid off is not entitled to any back salary, because she would not have earned any salary during the time she was laid off. It contends, therefore, that the court correctly determined that plaintiff was entitled to an amount of back salary of zero.

Plaintiff argues that in Humphreys we determined that her layoff status was irrelevant to her statutory right to reinstatement and back salary, that Humphreys determined her right to back salary, that the amount of that back salary is the amount she would have earned in the position in the physical education department for which she was qualified and that the court erred in allowing defendant to re-litigate that issue in this action. In Humphreys, we stated that the arbitration award concerning plaintiffs layoff status was “irrelevant” to whether the district had made every effort under former ORS 342.865 (l)(j)3 to transfer plaintiff to a position for which she was qualified and, furthermore, that the award was “not brought to FDAB’s attention.” 67 Or App at 736 n 2. We held that “the facts support FDAB’s conclusion that the district violated former ORS 342.865(1)(j). Accordingly, the FDAB order is affirmed.”

*499 ORS 342.905(6) (a) provides that a teacher who is reinstated “shall receive the salary for the period between the effective date of the dismissal and the date of the order reinstating the teacher.” As applied to this case, the word “salary” in ORS 342.905(6) (a) refers to the salary that plaintiff would have earned in the position in the physical education department to which district should have transferred her. Accordingly, FDAB’s reinstatement order entitled plaintiff to the back salary that she would have earned if she had been timely transferred to that position. The proceeding culminating in Humphreys conclusively determined plaintiff s right to that back salary. Accordingly, the court erred when it denied plaintiffs motion for partial summary judgment on the issue of liability and granted defendant’s motion.

Plaintiff asserts in her affidavit that district owes her “approximately $23,450 in back wages and insurance, plus appropriate PERS deposits and interest.” District does not dispute that, if she is entitled to any back salary, the amount to which she is entitled is what she claims in her affidavit. On the other hand, the record does not permit a precise determination of that amount, and the court must determine it on remand.

Reversed and remanded to with instructions to enter judgment for plaintiff in the amount that district owes her.