The intention of the present study was to investigate the effects of continuous and interval circuit training on the agility and speed ability of secondary-level school students. Total of 60 boy students, age level 13 to 16 years were randomly selected as samples from the Purulia district of West Bengal, India. Samples were equally divided into three groups: continuous circuit training group (CCT), interval circuit training group (ICT), and Control group (CG). CCT and ICT groups participated in a specific training program for three days per week; the training was composed for 12 weeks. On the other hand, CG was on normal life activity. The data was collected before and after the application of training protocol on agility and speed. ‘t’ test and ANOVA were used to find out the statistical significance. The level of significance for the study was selected as 0.05. The investigation concluded that interval and continuous circuit training does have a significant positive effect to enhance Physical fitness components' speed and agility even after 12 weeks of training on secondary level school students.