Teenagers of high school age have a high risk to commit various juvenile delinquencies. The ability to control themselves is crucially important to develop by assisting and guiding them both individually and in a group to prevent them from various risky behaviors. The study aimed to determine the effect of transpersonal counseling on high school students with self-control issues. The research was a quantitative study with a quasi-experimental design that utilized data collection tools of self-control scales and academic cheating scales. The selfcontrol scale reliability test was conducted using the Cronbach Alpha formula and received a value of 0.803. The samples in the study were 12 students in the eleventh-grade students out of a total population of 360 students. Data was collected using a questionnaire and were analyzed using the t-Test to find the difference between pre-treatment and post-treatment of transpersonal counseling intervention. The results of this study indicated that 8 out of 12 students showed a significant increase in the self-control after treatment. The average score for the pre-treatment was 8.85 and increased to 11.34 after counseling. It is expected that the finding can be used as a reference for Guidance and Counseling teachers in developing transpersonal counseling services for students with self-control issues.

This study aims to produce a product in the form of an assessment instrument for the students' needs in order to determine the Guidance and Counseling program at SMA Negeri 1 Sumberlawang. This instrument was developed through the ADDIE model research development method. The instrument for assessing that needs of students at SMA Negeri 1 Sumberlawang is an adoption of existing instruments, and is retested through validity and reliability tests with different subjects and the latest time. Sample that involved in this research and development amounted to 84 students, from a population of 101 students. Based on the validity and reliability test, shows that instrument meet the requirements in terms of validity and reliability. Referring to the description above, student needs assessment instrument is suitable for use in order to collect information on the needs of participants, so that a concrete Guidance and Counseling program can be prepared based on the needs of students.