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Policy Number: 
Superintendent File: FBC-R

Elementary Schools

There are two methods used to calculate elementary school capacity.  The first, the ratio method, takes average class size ratios and computes capacity on a total classroom basis. For our most recent buildings, this computation is as follows:

Classroom Rooms Sections Avg. Class Size Cap
Kindergarten 2 4 25 100
Regular Classrooms 18 18 25 450
Capacity       550

For year-round schools, these classrooms can be used for three groups of students at one time, with a fourth group of students on vacation.  The schedule then permits capacity to increase by 28 percent or to 700 students.  Because of the half-day program, kindergarten capacity could be increased to 150 but the per-grade capacity is 100 for grades one through six, thus limiting the overall scheduling efficiency.

The second calculation is based upon square footage standards per pupil.  Once again, using our most recent elementary school design (Elementary School #19), the calculation of capacity is provided:

Elementary #19
Classroom No. Rooms Size Total Sq.Ft.1 Cap. Sec. Total
Kindergarten 2 1,000 2,000 50 40 2 80
Classrooms 18 800 114,400 30 480 18 480
Total             560
          YRE*   715
*YRE - year-round education (multi-track) calendar which applies a factor of 1.28 times the conventional calendar capacity. This implies that average class sizes approximate 20 students for kindergarten and about 27 students for grades one through six.


Core Areas Size Std2 Teachers Students Capacity
Library 2,000 70 29 25 714
Gymnasium 3,500 175 20 25 500
Cafeteria 2,000 10/stu   2003 600

1Educational FacilitiesBasil Castaldi, 1994. Standard expressed as square footage per child.
2Standard expressed as square footage per teacher, except where noted.
3Number of students multiplied by the number of lunch periods.


Elementary Schools

The conventional capacity is extended 28 percent by the implementation of a multi-track year-round schedule.

The District recognizes that at certain times, because of inadequate capital funding, extremely rapid growth or both, more children will have to be assigned to an elementary school.  In no case, shall the LIMITED USE EMERGENCY CAPACITY EXTENSION (LUECE) be used for more than a two year period of time.  In this case, capacity shall first be extended by the use of mobile classrooms, if funding is available for lease or purchase.  As a last resort, class sizes may be adjusted to reach the designated number.  In no case, however, shall the number of students assigned to a building exceed this capacity number, unless approved by formal Board of Education resolution.

Elementary School Capacity Totals
  Design Capacity  
School Conventional  Extended (YRE) Limited Uses Emergency Capacity Extension
Acres Green 650 800 960
Bear Canyon 550 700 840
Castle Rock 550 700 840
Cherokee Trail 550 700 840
Cherry Valley 70 79 75
Eagle Ridge 550 700 840
Franktown 400 400 480
Larkspur 175 175 210
Mountain View 550 700 840
Northeast 450 600 720
Northridge 550 700 840
Pine Lane Primary 550 700 840
Pine Lane Intermediate 450 600 720
Rock Ridge 550 700 840
Roxborough 550 700 840
Sand Creek 550 700 840
Sedalia 400 400 480
South 550 700 840
Summit View 550 700 840
Total 9,195 11,445 13,725
Scheduling Efficiency* = 92 percent
Total Net Capacity 8,459 10,529 12,627
Academy Charter 260 260 260
Core Knowledge Charter 260 260 260
Total Capacity 8,979 11,049 13,202
*Scheduling Efficiency. Because of normal functional requirements, it is not always possible to utilize all classrooms or all seats every period of the day or for any purpose. For example, a kindergarten room that is used one-half day cannot be utilized for a third grade class which must meet all day.  In a secondary school, a general classroom would not serve the educational function of a chemistry or biology class where specialized equipment is necessary. Even though 100 percent utilization is a desirable  goal,  it  is  impossible  to  reach  in  actual  use. Demographic  trends  or  student  demand  for  courses  does  not permit every seat in every classroom to be filled every minute of the school day. Utilization ratios reflect the District’s historic capability to house students in each type of facility.


Middle School Capacity Calculation

(Cresthill) Middle school capacity calculations vary by use or function and are summarized as follows:




Emergency Use

Art 44 44 50
Drama 72 72 90
General Classrooms 600 800 900
Computer 48 48 56
Science 168 224 224
Special Education 10 10 15
Life Management 44 44 52
Industrial Tech 44 44 52
Music 60 60 72
Physical Education 60 60 108
Health 50 50 60
Total 1,200 1,456 1,715
Scheduling Efficiency* = 85 percent
Net Capacity 1,020 1,238 1,427
*Assumes each classroom can be scheduled six out of every seven periods.


Maximum Capacity:  Teaching Stations * Average Class Size

Extended Capacity:  Applies a multi-track year-round calendar to general classrooms and science only in that these are the only areas that can track in and out to increase usable space.

Limited Use: Once again, the LIMITED USE, EMERGENCY CAPACITY EXTENSION would be used for no longer than a two year period.   (See explanation under elementary schools).  Mobile classrooms will be applied as a first remedy, if financially  feasible,  for  classroom  space.    Because  mobiles  cannot  be  adapted  for specialty spaces like art or life management, class size increases may be needed to permit students to have the same exploratory subject opportunities that exist under the maximum and extended capacity programs.  Class size increases will be the option of last resort.  In no case however, shall the number of students assigned to a building exceed the LUECE, unless approved by formal Board of Education resolution.

Middle School Total
School Conventional Extended

Limited Use

Castle Rock 1,070 1,070* 1,285
Cresthill 1,020 1,238 1,427
Parker Vista 1,060 1,290 1,484
Total 3,150 3,598 4,196
*Not available for year-round because of building system inadequacies.


High School Capacity Calculation

Highlands Ranch High School
Department Design Capacity Limited Use
Capacity Extension

Art 88 104
Business 96 112
Language Arts 308 350
Home Economics 72 84
Mathematics 260 300
Physical Education 210 252
Science 264 308
Foreign Language 280 323
Journalism 24 32
Social Studies 308 350
Special Ed 20 30
Industrial Tech 44 56
Music 80 100
Composition 48 56
Drama 60 72
Total 2,162 2,529
Scheduling Efficiency* =  85 percent
Net Capacity 1,838 2,150
*Assumes each classroom can be scheduled six out of every seven periods.

For high schools, maximum capacity is set by multiplying the number of teaching stations by the average class size. Once again, the District recognizes that in limited situations (less than a two year period) capacity may need to be extended. In high schools, mobile classrooms may be used as general classrooms (math, social studies, etc.), with class size adjustments in elective courses to ensure that students' access to requested courses will not be diminished because of increased enrollments.

High School Total
School Design Capacity Limited Use
Capacity Extension
Douglas County 1,617 1,867
Highlands Ranch 1,838 2,150
Ponderosa 1,884 2,213
Total 5,339 6,220


Total Student Capacity

Extended LUECE
Elementary 8,979 11,049 13,147
Middle 3,150 3,598 4,196
High School 5,339 5,339 6,220
Total 17,468 19,986 23,563

Issued:  December 13, 1994
Repealed by the Board and re-enacted and revised by the Superintendent: August 19, 2003

FBC, Facility Capacity