Relating to education; providing for a principled pay practices +system to attract and retain high quality teachers; modifying certain +educational improvement plan content requirements and requiring substantial +teacher participation in plan development; providing for principled pay +practices aid, specifying certain school district qualification and collective +bargaining agreement requirements and providing for application approval by the commissioner of children, families and learning (CFL); authorizing +districts and exclusive representatives of teachers to jointly reopen closed +collective bargaining agreements to enter into a principled pay practices +system; repealing the alternative teacher compensation system and aid (mk)