Make a list of social rules you want to teach your students. Choose a few rules, such as making eye contact, speaking in an indoor voice and introducing themselves, and prioritize them.
Provide students plenty of opportunities to practice their social rules. Bring people into the class for them to speak to and take them out into the community if possible as well. Put your students in controlled social situations so they can get real-world experience.
Create role play social situations with your students. Have them take turns acting out different people that another student might talk to. For instance, one can pretend to be a police officer and the other a student that needs help.
Instruct students to draw maps to practice giving directions to each other. Students make maps directing another student to a place in the classroom or on the school grounds, then switch with another student and see if they can follow the map.
Assign jobs to students within the classroom. Students can take turns being a time keeper, for instance, to help them learn to be on time. Put another in charge of collecting homework, so they get practice interacting with other students.