Ohio Department of Health fall 2008 required immunizations for entry into school:

Immunizations Summary for Day Care, Head Start, Pre-School and School Attendance (23kb PDF)

Recommended Child & Adolescent Immunization Schedules from the Center for Disease Control and Prevention:

(Persons aged 0-6 years, 7-18 years, and "catch-up schedule")

http://www.cdc.gov/vaccines/recs/schedules/child-schedule.htm