N.Y. Educ. Law § 113

§ 113. Leaves of absence to professional members of the department.\nThe department, subject to such regulations as the commissioner may\npromulgate, may grant any professional member of the staff of the\ndepartment an extended leave of absence for advanced study, research,\nprofessional writing or other experience of recognized professional\nvalue, for not to exceed one year in seven at the rate of not to exceed\none-half the regular salary paid, or for not to exceed six months with\nsalary at full rate for such leave. The balance of salaries\nappropriated for such persons, or so much thereof as may be necessary,\nmay be applied during the period of such absence for the purpose of the\nsalaries of substitutes to take the place of the persons thus on leave.\nNot more than five such leaves of absence shall be granted during any\none fiscal year.\n