(b) For the purpose of estimating ADA, the following definitions shall apply:

1. (1) “Enrollment” means the graded enrollment of minors of the district as reported to the Department of Education on Form R-30 (or any successor form). Comparable enrollment data for the end of the first or sixth school month may be acceptable if verified by the appropriate county superintendent of schools.

   Enrollment shall include only those students who actually reside in the school district and any students who reside in the district but attend school in other than the district of residence. Enrollment shall exclude high school pupils who attend continuation classes.

2. (2) “Projected enrollment” means graded enrollment as determined by the cohort survival method for a period of two years for the elementary grades and for a period of three years for the high school grades.

3. (3) “Pupil units attending continuation classes” is computed as follows: First determine the average number of pupil hours of attendance in high school continuation classes per school day in the highest three months of the latest 12 months, then divide the average by six. In making this computation, pupil hours during the regular school day in excess of 15 per week shall be included. Pupil hours for evening or Saturday classes shall be excluded. Multiply the final figure obtained in the preceding calculation by a factor which is computed by dividing the “projected enrollment” by the “current enrollment.” The result is the “pupil units attending continuation classes.”

   In the event the district is applying for a continuation high school facility and has students who have not yet been screened and assigned to continuation classes because of lack of suitable space, the district may submit an identified list of such pupils. The average number of pupil hours of high school attendance in continuation classes per school day as computed above may be augmented by the pupil hours obtained by multiplying the number of names on the list by three, or in the event the district can prove that continuation high school pupils attend classes for an average of more than three hours per day, such larger multiplier may be used. When an identified list of prospective continuation high school pupils is used, the number of pupils on such list shall be excluded from the graded enrollment.

4. (4) “Exceptional children” means those pupils assigned to special education classes as of the latest enrollment, plus a verified count of such pupils who are not attending classes of the district but will become a part of the attendance of the district when approved facilities for such pupils have been completed.
5. (5) “Estimated average daily attendance” means the projected enrollment multiplied by .97 plus the exceptional children assigned to special education classes, plus the pupil units attending high school continuation classes.
6. (6) “Housecount” means an enumeration of new housing units that are under construction, i.e. units that have at least reached the stage of foundations in place, and have not yet been completed and occupied, classified by type of housing unit as the board may prescribe. Such housing units shall not include hotel or motel accommodations or other living quarters generally used as transient or short-term accommodations, but may include spaces under construction for mobile homes which the board determines to be essentially for long-term occupancy. The definition of housecount prescribed herein may be modified from time to time as may be necessary to classify new housing units in the most appropriate manner for the purpose of measuring the pupil yield of such units.

(c) The projected enrollment shall be determined by the cohort survival method in accordance with the following and by the use of such forms and instructions as the board may prescribe.

1. (1) List either the latest enrollment for the end of the first school month or the subsequent sixth school month and the enrollment for the same period for the three preceding years. All applications approved by the board after April 30 of any given year shall be based on the enrollment as of the end of the sixth school month of the most recent year. Such enrollment shall be listed by level for each grade included in the application. High school applications shall also list the four highest grades of component elementary enrollment.
2. (2) Determine the numerical change in enrollment between each given grade in one year and the next higher grade in the succeeding year for each period and grade listed in (1) above. With respect to kindergarten enrollment (or first grade enrollment if no kindergarten is maintained), determine the numerical change in kindergarten (or first grade) enrollment between each period listed in (1) above, or alternatively, annual changes in enrollment based on a local census or survey of preschool children conducted according to such procedures as the board may prescribe.
3. (3) Compute the average annual change in enrollment for each grade maintained at the grade level of the application. The average shall be a weighted average computed by multiplying the most recent annual change in enrollment by three, the next most recent change by two, and the earliest change by one, and dividing the sum of the weighted changes by six.
4. (4) Progress the latest reported enrollment through the applicable two or three year projection period, modifying the grade progression each year by the average annual change for each grade as computed in (3) above.

(e) In the event that there is good reason to believe the number of pupils being added from construction of new housing units exceeds the number implicit in the cohort survival computation and when the land area of the district is less than 75% developed, the board may, at its discretion, modify the estimated average daily attendance as follows:

1. (1) Determine the graded enrollment one year from the latest reported enrollment by a one-year grade progression, adjusted for dropouts at the high school level.
2. (2) Determine the enrollment derived from new homes implicit in the cohort survival computation as follows: (i) Subtract the enrollment computed in (1) above from the one-year projection of enrollment as determined by the cohort survival method; (ii) To the remainder, add two percent of the latest enrollment for the end of the first or sixth school month, whichever is applicable. If the foregoing computations result in a negative number, the number shall be deemed to be zero.
3. (3) Determine the pupil yield per housing unit of housecount, as established by a survey of occupied housing units in the district, for the current year and the two preceding years. The survey shall take into consideration the different pupil yields of multiple and single family housing units or other significant yield characteristics. The current year yield factor for each type of housing unit shall be modified by the average annual difference of the factor for each type for the two preceding years.
4. (4) I the event that prior year data referred to in (3) is unavailable, the current yield factor shall be modified as the board shall prescribe.
5. (5) Establish the pupil yield of the housecount by multiplying the number of housing units in the housecount by the applicable yield per housing unit as determined above. Subtract the enrollment from new homes determined in (2) above from the yield of the housecount; the result of this computation is the amount by which the graded enrollment computed under the cohort survival method shall be changed.
6. (6) The housecount and surveys described in (3) and (4) shall be conducted by the district in accordance with methods, procedures, and standards which are approved by the Office of Local Assistance with respect to each specific case.