Recruit from security companies, society and the military. According to official website, the Education Bureau of De 'an County, schools in De 'an County will adopt various recruitment methods according to their own safety requirements and security service requirements, such as recruitment from security companies, recruitment from the society and recruitment from the army. When recruiting from a security company, the school can sign an agreement with the security company, and the security company will provide security personnel and the school will pay the corresponding fees. From the perspective of social recruitment, schools can publish recruitment information in the society, collect resumes of job seekers, strictly screen job seekers, and finally determine suitable personnel. Recruit from the army, the school can sign an agreement with the army, and the army will provide trained security personnel. The security personnel provided by the military are generally experienced and can better ensure the safety of schools.