Discipline models???

I just finished having coffee with one of the teachers at my placement school. She is about my age, and also went through the EOU MTE program. We often get together to chat about school, and she mentioned that next year my placement school may be trying out a new discipline model. As it stands now, it feels like the students are not held accountable for their actions.

Because I don't feel like the students will be truly punished, or held accountable for their actions if I do send them to the office, I never send students there. Instead, I deal with most interruptions on my own. I usually simply have students stay after class, and I haven't had a lot of major conflicts thus far. But, I was wondering, what are some ways that other schools deal with students who are unruly? What happens if they are sent to the office? Am I the only one who deals with problems this way? I would be interested to hear about some other successful or not so successful discipline models in schools....