A teacher who has taught in two Chicago high schools chronicled in Jonathan Kozol's "Savage Inequalities"--an alternative Westside high school and an affluent, suburban Eastside school--ponders benefits of teaching on both sides of the economic chasm. Although inner-city problems often stem from parents lacking power and expectations, suburban problems arise from parents with an unreasonable sense of entitlement. Unfortunately, spending and achievement disparities are enormous. (MLH)