Department of Elementary and Secondary Education
Missouri Student Staff Ratios
Source: Missouri Department of Elementary and Secondary Education 
(School Core Data Collection System)

http://www.dese.state.mo.us/planning/profile/

YEAR				School Year (i.e. 2004 = 2003-04 school year)
COUNTY_DISTRICT_CODE		6 digit county district code
DISTRICT_NAME			school district name
DICOUNTY			3 digit county code
CNTYNAM				county name
RPDC				RPDC Region Code
STUDENTS_PER_ADMIN_RATIO	Students Per Administrator (Position Code 10 or 20)
STUDENTS_PER_CLASSRM_TCH_RATIO	Student Per Classroom Teacher (FTE allocated to instructional class time)
STUDENTS_PER_TEACHER_RATIO	Students Per Teacher