(Estacada, OR) -- Students in the Estacada School District will head home early Monday as triple-digit temperatures hit during the first week of classes. Several schools lack air conditioning, prompting the district to shorten schedules across all campuses, with dismissals ranging from 12:25 to 1:45 p.m. Students say the heat makes it difficult to focus in classrooms without cooling. Other nearby districts starting this week have not yet announced similar adjustments.