A Denver elementary charter school that was temporarily granted space in a shuttering district-run middle school building will now be housed there permanently.

The school board voted Thursday to permanently place Rocky Mountain Prep Southwest charter school in the Kepner Middle School building, where it is sharing space this year with three other school programs. Such co-locations can be controversial but have become more common in a district with skyrocketing real estate prices and ambitious school quality goals.

Rocky Mountain Prep Southwest is part of a homegrown charter network that has shown promising academic results. The network also has a school in Aurora and is expected to open a third Denver school next year in the northwest part of the city.

Rocky Mountain Prep Southwest was first placed at Kepner for the 2015-16 school year. The placement was supposed to be temporary. The district had decided the year before to phase out low-performing Kepner and replace it a new district-run middle school, Kepner Beacon, and a new charter middle school, STRIVE Prep Kepner, which is part of a larger network. The district also temporarily placed a third charter school there: Compass Academy.

Compass has since moved out of Kepner but the other four schools remain: Rocky Mountain Prep Southwest, Kepner Beacon, STRIVE Prep Kepner and the Kepner Legacy Middle School, which is on track to be completely phased out and closed by June 2019.

In a written recommendation to the school board, district officials acknowledged that permanently placing Rocky Mountain Prep Southwest at Kepner would create a space crunch.

The Kepner campus has the capacity to serve between 1,100 and 1,500 students, the recommendation says. Once all three schools reach full size, officials expect the schools will enroll a total of approximately 1,250 students. Rocky Mountain Prep Southwest currently serves students in preschool through third grade with a plan to add more grades.

“DPS facilities staff are currently working with all three schools to create a long‐term vision for the campus, including facility improvements that ensure all three schools have what they need to continue to excel,” says the recommendation from Chief Operating Officer David Suppes and Director of Operations and Support Services Liz Mendez.

District staff tried to find an alternate location for Rocky Mountain Prep Southwest but were unsuccessful, the recommendation says. The district does not have many available buildings, and competition for them among district-run and charter schools can be fierce. In northeast Denver, seven secondary schools are currently vying for the use of a shuttered elementary.