This study assessed the effectiveness of multimedia and field trip instructions on the performance and retention of Upper Basic II Islamic Studies Students in Kaduna State, Nigeria. Eight (8) objectives were formulated to guide the study among which to determine the pre test and post test performance of Upper Basic Students taught Islamic Studies using multimedia instruction in Kaduna State, find out the performance of Upper Basic Students taught Islamic Studies using fieldtrip instruction and those taught using conventional instruction in Kaduna State, ascertain the retention ability of Upper Basic Students taught Islamic Studies using multimedia instruction in Kaduna State, among others. Relevant literature on multimedia and field trip instruction and approaches were reviewed. The study was carried out using quasi experimental design with target population of (10,161) Upper Basic(JSSII) Islamic Studies Students and a sample of Two Hundred and Forty-Seven (247) from three (3) intact classes was arrived at using purposive sampling technique. Data collected for the study was collected through administering pre-test and post test of Instrument which was validated by a team of experts and researcher‟s supervisors. The data collected was subjected to statistical analysis using Statistical package for Social Science (SPSS version 20.0). Demographic distribution of the respondent was analyzed using frequency and percentages while mean and standard deviation were used to answer the seven research questions and the corresponding hypotheses were tested using paired and independent t-test. The findings of the study among others revealed that students taught Islamic Studies using multimedia instruction had a better performance at post test than at their pre test (p-value 0.00 < 0.005). The use of field trip instruction in teaching Islamic Studies significantly enhances the performance of students than those exposed to conventional instruction (p-value 0.00 < 0.05). But the retention ability of Upper Basic students taught multimedia instructions and those exposed to field trip instruction was found to increase at equal rate which indicated that students in both groups had the ability to retain the content taught longer (p-value 0.072 > 0.05). Based on the findings the study recommended among others that teacher should be encouraged to use multimedia in teaching and sufficient multimedia facilities should be provided by government to schools and Islamic Studies teachers and students should be encouraged to be involved in study trip by school and parents as this widens their horizon in observing life situations of concepts that are not possible to be observed within the four walls of classroom. Curriculum developers, school administrators and teachers should promote the integration of both multimedia instructions and field trip instruction usage in Islamic Studies curriculum.