More than half of the elementary schools in Boulder Valley School District don't have air conditioning, and everyday since the August 15 back-to-school date all but two have reached over 90 degrees.
This August's record-breaking heat wave may even affect next year's back-to-school start date, as angry parents have been complaining in droves about their kids' sauna-like learning environments.
Air-conditioners are out of the question, since retrofitting just one school building would cost at least $1 million, Briggs Gamblin, communication director for Boulder Valley School District told 9News.
Instead, it's been up to parents to buy swamp coolers and air conditioners for their kids' classrooms.
In the future, the district is considering starting school after Labor Day--almost a full month after it begins now, or planting more trees outside classrooms for shade.
"Parents are concerned about the health effects of the heat -- exhaustion, dehydration -- both during the school day and after-school sports," parent Ophelia Larson, who's son attends Coal Creek Elementary in Louisville, told the Daily Camera.