The study examined the effects of orientation stimuli on attitude of senior secondary school students towards learning of Biology in Ekiti State. The study adopted pre-test, post-test quasi-experimental design. The population of the study consisted of all SS2 students offering Biology in Ekiti state. The sample comprised 160 students offering Biology and was selected through multi-stage sampling procedure across the three senatorial districts of the state. Questionnaire on Students’ Attitude towards the Learning of Biology (QSATLB) was used to generate data for the study. The validity of the instrument was ascertained by experienced Biology teacher and experts in tests and measurement and psychology. The reliability coefficient of 0.75 was obtained for SATLB using internal consistency method. The experimental procedure was in three stages namely pre-intervention, intervention and post-intervention stage. The data collected were analysed using descriptive and inferential statistics. Findings of the study revealed that attitude of students toward the learning of Biology before orientation was very poor but after the students were properly orientated, their attitude toward the learning of Biology changed positively. In addition, there was significant difference in the attitude of students towards the learning of Biology before and after orientation. It was recommended among others that school administrator should employ qualified biology teachers for orientation; they should not use teachers from other discipline in lieu of a qualified biology teacher in the delivery of orientation service. Keywords: Orientation Stimuli, Attitude, Biology,

This article has been published at www.cjar.eu , Issue: 7, Vol.#1, October 2020.