How might the "let everyone out when they ask" system work in a school of 2000 students, you ask.
My DCs' US high school has approximately 3,500 students and operates a hall pass system. They swipe their ID as they leave the room and swipe again on return to the classroom. The data reveals who is abusing the trust placed in them, as do test and exam results.
The school has a system of academic counselors who plot your course choices and assist with university/vocational course applications. They monitor grades. There are deans who monitor and assess discipline issues reported by teachers and/or are highlighted by ID swipes in classrooms and hallway machines. Sometimes a student will pull up his or her socks after an interview with their dean. There are three social workers who will deal with issues passed on by the deans if they have decided that the issue requires a therapeutic intervention. The team of class teacher, counselor, dean and perhaps social worker operates together seeking the best possible outcome for the student. The best possible outcome of a pattern of behaviour or single act of rule breaking for some categories of infraction is that the student is engaged with school life, resolving whatever social or emotional issues kept them from engagement, and progressing to the best of their ability academically.
The ID swiping was introduced in order to examine exactly why black students were being reported late to class more than white students. Was there a bias in favour of white students who arrived late, and corresponding failure to allow black students the benefit of the doubt? The test element of the system required that students outside a classroom after the class bell rang swiped their cards; for the testing period no teacher was allowed any discretion whatsoever as to who was admitted after the bell.
The data revealed that teachers were not as dispassionate as they thought they were but also that it was not a black/white issue. Teachers had favourites [gasp]. Their good judgement was creating a situation where race relations were being damaged because there was a perception of discrimination against a group.
The school works very hard to improve perception because it is extremely important to school culture, to academic attainment, to how welcome parents feel - it's all a circle feeding into itself and gathering a momentum of its own. If an element of the perception is causing problems, then it is important to address that. The school is funded by the taxes of the community and only caters for students who live in the catchment. All stakeholders are able to participate in policy decisions, to question the administration and to get respectful answers. It is a very democratic system. It is also a system where students understand that a certain amount of trust is placed in them and they are assumed to be active and positive participants in their own education. "Trust but monitor" could accurately describe how it operates. Positive expectations generate a culture of engagement.
The basic feeling that the school wishes all students to feel is that the entire community is concerned with each individual student's personal human dignity. The dignity of the individual student is at the heart of discipline policy and strategies permitted for classroom management. Individual student treatment is data driven and so is intervention policy. Interventions are as appropriate as humanly possible. Intervention options and escalations are clearly set out, with different categories of offense identified and stages of carrot/stick followed to the letter, with parents always informed and invited to be involved. (Some just shrug, which is sad).
Community resources are sometimes involved too - the community youth initiative officer works closely with youth in danger of gang influence, delinquency, etc. The police seek to prevent crime such as drug dealing rather than arrest a student after the fact. Again, all police decisions are open to public scrutiny, and in my particular home municipality, policy and programmes are data driven with an eye to improving community integration.
You can complain that that costs money. It certainly does.
But basing school policy on teacher perceptions or student perceptions or parent perceptions alone is nonsense, and may be working against everything the school hopes to achieve.
All discipline policy and all quality of life policies in a school should be data driven.