balance,we need change,serve all students,windows,evolving needs,make connections,evolving technology,expectations,evolving world,model,pro. development,demographics,need to reflect,so many demands,resources,prior knowledge,inflexible teachers,new textbook,no parental support,parent communication,multiple preps,legal requirements,update traditions,no collaboration,assessments,student differences,changing demographic,district rules,students segregate,cultures,curriculum,time,