Project at a Glance

Title: California portable classrooms study. Volume I, Phase I: Mailed survey. Volume II, Phase II: Main Study. Volume III: Project Executive Summary

Principal Investigator / Author(s): Whitmore, Roy; Gerry Akland

Contractor: RTI International

Contract Number: 00-317

Research Program Area: Health & Exposure

Topic Areas: Environmental Justice, Health Effects of Air Pollution, Indoor Air Quality, Vulnerable Populations


The purpose of this California Portable Classrooms Study was to assess environmental conditions in California's portable classrooms. This report documents results from a mailed survey to a probability sample of all public California K-12 schools with at least one portable classroom. Two questionnaires, a Facilities Questionnaire and a Teacher Questionnaire, and passive formaldehyde samplers were mailed to the sample of schools selected to participate in the survey. This report describes the sample design, the survey instruments, the data collection process, the data analysis procedures, and the results that show and compare the major characteristics of the populations of eligible public schools as well as portable and traditional classrooms. Response rates were between 40 and 45% for school-level responses. However, for schools that responded, response rates at the classroom-level were about 95% for teacher questionnaires and for formaldehyde monitoring. The population of schools with one or more portable classrooms is estimated to consist of about 6,900 schools, with a total of about 145,000 traditional classrooms and about 85,000 portable classrooms.

For questions regarding this research project, including available data and progress status, contact: Research Division staff at (916) 445-0753

Stay involved, sign up with CARB's Research Email Distribution List