Power-sharing is a political arrangement in which different or opposing groups all take part in government together. They agreed a power-sharing arrangement, but it collapsed after five months.
Students dropping out of school want peer support. If there is someone who will dropout too then there is some justification for dropping out. John is dropping out. He wants Mike to dropout too. If Mike agrees then John will feel as though he made the right decision and that dropping out must be okay because Mike is going to drop out with me.