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