(g) “School annuity” shall mean the total annual payment due to any school annuitant. Such annual payments shall continue for life, and be paid in equal periodical installments. (h) “Service annuity” shall mean that part of the school annuity which is based upon the service record of the person concerned, and which is paid by the state. (i) “Savings annuity” shall mean that part of the school annuity which results from the accumulated contributions of the school employee and interest thereon. (j) “Disability annuity” shall mean a school annuity granted to a school employee who suffers such physical or mental disability as to be unable to perform school service. (k) “Standard annuity” shall mean the school annuity which is granted to a school employee at age sixty-five, as prescribed by this act. This standard annuity shall be used as the basis in computing actuarially equivalent annuities granted at ages other than sixty-five. (1) “Service record” shall mean the individual record kept by the board for each school employee. It shall show the number of school years of school service, the salary or wages earned, the date of birth, and such other date as the board may require. (m) “Age” and also “attained age’’ shall mean the age on the birthday occurring in the calendar year under consideration. (n) “Deductions” shall mean the amounts withheld, as provided in this act, from warrants issued in payment for school services. (0) “Actuarial computation” shall mean computation in accordance with some standard actuarial table. The board shall determine which one of the standard actuarial tables shall be used. Src. 2. There is hereby created the state school retirement fund of Kansas, and the state school retirement board of Kansas for its adminis- tration. Src. 3. The board shall consist of six members: The state superin- tendent of public instruction, who shall also be chairman of the board; the state treasurer, who shall also be custodian of all funds of the board; two school employees, each to be appointed by the governor from a list of three to be submitted by the state board of education; and two other persons to be appointed by the governor. Vacancies among the appointed members of the board shall be filled by appointment in the same way; and those so appointed shall serve for the unexpired terms. Not more than two of the appointive members shall belong to the same political party; and at least two of the appointed members serving at any time shall reside in counties wherein there is no city with more than eight thousand population. Members shall serve without compensation; but they shall be reimbursed for expenses incurred in the performance of their duties. Sec. 4. At the first appointment, the governor shall designate the terms of the appointed members, to begin at once and to run respectively one, two, three and four years from July 1, 1941. Thereafter, appoint- ments shall be for four years each in rotation, and the appointees shall take office on July first.