The study examines the relationship between School Instructional Plant and Teachers` Task Performance in Ijebu-Ode Local Government Area, Ogun-State, Nigeria; taking into consideration; teachers‘ educational qualification, sex, marital status and location of school. 600 teachers were randomly selected from ten secondary schools consisted the respondents and two types of questionnaire - School Instructional Plant Questionnaire (SIPQ) and Teachers` Task Performance Questionnaire (TTPQ) were developed based on a four – point Likert Scales. Five hypotheses were generated and tested in the study using chi-square to determine whether sex differences, educational qualification, marital status and location of schools affected Teacher`s perception of school instructional plant. Based on the findings, the five hypotheses were rejected showing that there is a strong relationship.