Individual Behavior Plan

I witnessed the following scenario take place. This was during my student teaching experience, I was in the 6th grade at the time and the following situation took place with a 5th grade student and her teacher (who I must add is a 1st year teacher.) The school had an assembly and the grades were lining up to walk down the hallway to the gym with their chairs. Everything was going smoothly until a particular 5th grade student stopped, set her chair down and began to throw a tantrum. Her teacher handled it by walking up to this student and said, (student's name) THREE, then (students name) TWO. She didn't get to ONE. When doing the count down I observed that the teacher had about 30-45 seconds of wait time between the numbers. The student was intently thinking, and after two she decided to pick up her chair, stop throwing her tantrum and continue walking. After this incident I asked the 5th grade teacher why she counted and what it meant. She told me that there was an agreed upon "behavior plan" for the student. The student came up with the consequences and also the rewards. She knew what would happen if the teacher got to ONE. This plan was put into place about 4 weeks into the year and the teacher told me that they have made adjustments to the consequences one time and the rewards multiple times. The people involved with the individual behavior plan are the student, the students parents, the teacher, and the principal. I think this is a great idea to have so that if any of us get a challenging student who is non compliant we will be able to create an individual plan with them. The biggest point that this 5th grade teacher stressed to be was that the student had to come up with the consequences and rewards and that as the teacher, you must always stay firm, calm, and follow through every time. :)