Coffee has become a promising leading commodity in the North Sumatra region. However, in the practice of coffee cultivation at the location, issues were found where most farming practices did not comply with Good Agriculture Practice (GAP). One way to support the achievement of SDG Goal 8: decent work and economic growth can be through community service. The Edu Farmers International Foundation, through its "Farming for the Nation" program, conducted mentoring activities for coffee farmers in the form of field schools. The aim of this activity was to assist coffee farmers in Hutagurgur Village in adhering to proper GAP practices to achieve the maximum quality and quantity of coffee. The method involved observing problems and potentials, formulating solutions, planning field schools, determining topics and schedules for the field schools, and conducting the field schools. The results showed that farmers experienced an increase in knowledge and implementation by 25-400%. However, the impact on productivity has not yet been observed, as the assessment was not conducted during the main harvest season.

Low education human resources in Indonesia, especially educators or teachers who are less professional in carrying out their work, can be the cause of low levels of education in this country. One way to improve the quality of education is through the professionalization of teachers or through educational supervision. Supervision through various methods, education corrects educational problems helping, supervising, guiding, and directing educators towards professionalism in its goal is to improve education and address problems with it. Educational supervision supports teachers in developing lesson plans that will produce the desired learning outcomes. Supervision is an integral part of efforts to improve learning achievement and teacher quality. Supervision or supervision is an effort to provide services to education, especially teachers. Education supervision is also a process of controlling and evaluating activities to ensure that all educational activities are carried out according to plan, as well as activities to improve and correct if there are deviations that will interfere with the process of achieving goals. Reviewing educational supervision in order to improve teacher professionalism is the purpose of this. This article is written using the literature study method in the form of a number of literature tasks related to the management of research materials, reading and recording, and information collection techniques. Some are obtained on the basis of research studies.

This research aims to find out how effective and efficient correspondence management is after the use of online-based electronic information and communication technology (paperless office system) in processing incoming letters. Utilization of information technology in correspondence management is management of an agency's correspondence system by utilizing information technology in the form of computer media, the internet or other media using either manual or electronic systems. The main discussion in this research is how effective the delivery of incoming mail services is with an electronic system and the obstacles faced in implementing these two systems in mail management. The research results show that the application of information technology in correspondence management is able to speed up the administration process, reduce human error, and increase data accessibility and security. However, several obstacles such as limited skilled human resources and inadequate technological infrastructure are still challenges. Recommendations are provided to overcome these obstacles, including training for staff and improving technological infrastructure. Thus, it is hoped that the use of information technology in correspondence management can continue to be improved to support a more modern school administration and efficient.