Checkpoint Top Stories for 23 May 2014

Ex-Minister Williamson told police what they should do;IRD investigates some private schools over false tax claims by parents;Family of man beaten to death, fear for others living nearby;Thailand military summons ousted PM;Deadly punch leads to two years' jail;Charter school bids include American and Islamic groups;Principal defends $5000 of vouchers from her own company;Patients assaulting hospital staff too common.