The objectives of study were: (1) To prepare the intervention program for seven units in the subject of Environmental Science for standard IV. (2) To implement the intervention program to study its effectiveness on standard IV students in terms of their academic achievement. (3) To study teachers’ opinion about the intervention program. (4) To study the opinion of the students about the intervention program.

Sample was selected randomly. A school consisting of large number of students from the lower socio-economic background was taken randomly. The design selected for the study was a single group pretest post-test design wherein the achievement was studied prior to the implementation of the intervention program and after the implementation of the intervention program.

Tools prepared by the researcher were the achievement tests, semi-structured interview schedule for the teachers and semi-structured interview schedule for pupils. In phase I, observation was done in five different schools in Baroda city. The observation took five weeks.

In order to study the effectiveness of the intervention program experiment was carried out.The implementation phase was divided again in two phases i.e. pilot study and implementation of the intervention program.

The findings of study were: (1) It was found that the difference between pretest and posttest scores for all the units and all types of tests was significant. This clearly indicates the overall effectiveness of intervention program. (2) If there is a change in the infrastructural facilities, school ecology is good and if the facilities provided at the school level are good and utilized properly, the achievement of students was found to improve. (3) It was found that if environment was taught with environmental aspects, the achievement of students has improved.