The overall aim of the proposed study is to conduct a randomized controlled school-based trial (RCT) to evaluate the effectiveness of a school nurse-delivered smoking cessation intervention in increasing 30 day abstinence rates among high school students who smoke. Forty high schools serving a diverse student population will be recruited and randomly assigned to one of two conditions: (1) Special Intervention (SI) - four 30-minute individual patient-centered smoking cessation counseling intervention sessions based on the Public Health Service (PHS) clinical practice guideline delivered by school nurses; or (2) Information Only (IO) attention-control comparison condition - four individual sessions with the school nurse to check smoking status and deliver a standardized series of informational pamphlets on smoking and cessation. Participant assessments will occur at study entry (baseline) and at 3-,12-month follow-up. Thirty students enrolled in grades 9 through 12 who report smoking within the past 30 days and willingness to participate in a smoking cessation intervention study will be recruited from each school (n=1200) to provide 25 completed assessments per school at 12-month follow-up (n=1000). If found effective, the study products (i.e., intervention protocol, student materials, training manual, and estimated costs of intervention implementation) will facilitate dissemination of the intervention to school nurses nationally.