At Emily Griffith Technical College , thousands of students learn the ins and outs of trades such as auto repair , welding, and HVAC. However, behind the scenes, school leaders are grappling with a growing challenge: finding enough instructors to meet student demand.

Gideon Geisel, dean at the college, said there's no real pipeline for recruiting instructors in the trades.

"Throughout the year, you're always going to have a need for additional instructors," Geisel said. "But there's no pipeline. To even find a candidate could take six to nine months."

Gideon Geisel, dean of Emily Griffith Technical College in Denver, Colorado CBS

Currently, the school operates with about 17 instructors -- a full staff, according to Geisel. But when a part-time HVAC position opened last year,

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