performed by the non-probationary teacher are performed by several others, the non-probationary teacher’s place has been “filled by a replacement.” Which of these two meanings is to be drawn from the language of the contract is for the jury to decide. Yandever is, of course, aided by the presumption that the construction in her favor will be favored since the District drafted the agreement.
Vandever asserted at trial by her own testimony and through the testimony of Professor Jean Scurlock, an instructor employed by District, that “place” means a fifteen hour teaching load. When questioned about the definition, Yandever stated, “As teachers understand that, place means fifteen-hour teaching load.” In her brief, Vandever contends Scurlock was one of the original authors of PRP 3.0034. However, at trial, when Scurlock was asked if she drafted PRP 3.0034, she responded, “I am not exactly certain I did, but the writing is my style, so I would surmise that I probably did, although these things are then rewritten, rewritten over the years.” When asked about her understanding of the meaning of place, Scurlock testified, “Place means that a faculty member has a job to perform, to teach, which is fifteen credit hours per semester, or in that vicinity, anywhere from fourteen to sixteen.”
Both Vandever and Scurlock testified about their “understanding” of the meaning of place. According to District, testimony about one’s understanding of something does not amount to competent evidence.
The use of the term “understanding” is common when people express the concepts they have formed as to the meaning of certain language. In fact, such use of the term “understanding” appears in the cases. In National Corporation v. Allan, 280 S.W.2d 428, 433 (Mo.App.1955), the court said:
If it appears that an ambiguous term of a contract has an established meaning amongst those engaged in the business to which the contract relates, it should be treated, in interpreting the contract, as used according to that understanding, unless it clearly appears from a consideration of the entire instrument or the surrounding circumstances at the time the contract was made that a different meaning was intended.
(Emphasis supplied). This quotation is applicable as an answer to the contention made here. There were, in this case, testimonies of persons involved in the profession to which the contract relates. True enough, these persons were testifying to an opinion on the very issue to be decided, but that is appropriate when the witnesses by experience, observation, or knowledge are particularly qualified to draw such conclusions. McKinley v. Vize, 563 S.W.2d 505, 510 (Mo.App.1978).
When such a conflict exists, whether caused by the testimony alone or the testimony and the other circumstances of the case, the issue is for the jury under appropriate instructions.
It is not the place of the trial court, nor of this court, to weigh the evidence and conclude the issue.
Where a contract is ambiguous and resort to extrinsic evidence is necessary, a jury case is made if the evidence is conflicting or if different conclusions may reasonably be drawn from the evidence but if there is no real conflict of evidence on any essential facts and the meaning of the words used is made clear by the evidence, it becomes the duty of the court and not the jury to construe the contract.
Boswell v. Steel Haulers, Inc., 670 S.W.2d 906, 914 (Mo.App.1984), citing Commerce Trust Company v. Howard, 429 S.W.2d 702, 705-706 (Mo.1968). It cannot be said that there is no conflict in the evidence in this case on the meaning to be given to the contract language. It is reasonably susceptible to more than one meaning, and the issue was for the jury. Argument that one view or the other is more persuasive does not affect the submissibility question.
District next asserts that even if “place” means what Vandever says it does, Van-dever still did not make a submissible case