Ill. Admin. Code tit. 23, § 151.50
a) Districts eligible for grant awards shall be eligible in the order of:
c) Needed Capacity
1) For each priority other than priority five, the district's needed capacity shall be calculated by subtracting its currently available capacity as determined under subsection (d) from its current enrollment or its projected enrollment, whichever is greater.
d) Determination of Available Capacity
1) The enrollment capacity of each room or space currently subject to occupancy by students for instructional purposes in a district-owned, permanent building, or in a building leased by the district if the lease is at least ten years from expiration, shall be determined by dividing the net floor area (in square feet) of the room or space by the appropriate loading factor, as follows:
| Type of Room or Space | Loading Factor |
| Prekindergarten Classroom | 40 |
| Kindergarten Classroom | 40 |
| Elementary General Classroom | 35 |
| Elementary Art Classroom | 40 |
| Elementary Music Classroom | 30 |
| Elementary Computer Classroom | 35 |
| Middle School General Classroom | 35 |
| Middle School Art Classroom | 40 |
| Middle School Family and Consumer Sciences Classroom | 50 |
| Middle School Music Classroom | 25 |
| Middle School Computer Classroom | 40 |
| Middle School Science Laboratory | 40 |
| Middle School Science Laboratory/Classroom | 50 |
| Middle School Industrial Technology Laboratory/ Shop Not Classified Elsewhere | 40 |
| High School General Classroom | 30 |
| High School Art Classroom | 35 |
| High School Music Classroom | 25 |
| High School Computer Classroom | 40 |
| High School Family and Consumer Sciences Classroom | 60 |
| High School Science Laboratory | 35 |
| High School Industrial Technology Laboratory/Shop | 75 |
| High School Laboratory Not Classified Elsewhere | 35 |
| Special Education Classroom | 50 |
2) Buildings and additions with a functional age over one hundred years old shall be assigned an enrollment capacity of zero. The functional age of a building and each of its additions shall be individually determined by multiplying its actual age by one of the following condition factors, to be determined using the Building Condition Evaluation Form supplied by the State Board:
| Condition of Building or Addition | Condition Factor |
| Excellent | 0.2 |
| Satisfactory | 0.4 |
| Substandard | 1.0 |
| Poor | 1.5 |
| Very Poor | 2.0 |
4) Available capacity shall be calculated by multiplying enrollment capacity as determined in subsections (d)(1) through (d)(3) by the following utilization factors:
| A) | elementary schools | 0.9 |
| B) | middle or junior high schools | 0.85 |
| C) | high schools | 0.8 |
If the appropriation for any application cycle is insufficient to fund grants for all applicant school districts that meet the grant award criteria in this Part, then school districts that meet the grant award criteria will be given conditional construction project grant award status, and ranked in order of priority described in this Section.
(Source: Amended at 47 Ill. Reg. 11439, effective July 12, 2023)