Laboratory tests on geosynthetic-reinforced soil-aggregate systems were carried out by many researchers to understand the improvement in bearing resistance of soil-aggregate systems because of geosynthetic reinforcement. California bearing ratio (CBR) test is one among the common laboratory tests adopted for this purpose. This paper presents the influence of sample size and anchorage of reinforcement in CBR test through tests carried out using conventional and modified CBR moulds with and without anchorage of reinforcement. Clay subgrade and aggregate subbase were simulated in these tests with a geosynthetic layer placed at the interface. Modified set-up was double the size of the conventional set-up and has the provision to anchor the reinforcement. Three different types of geosynthetics namely, geotextile (GT), biaxial geogrid (BG), and geonet (GN) were used in the tests. While the size of the mould significantly affected the test results, effect of anchorage of reinforcement on the bearing resistance of reinforced soil-aggregate systems was not significant. Increase in sample size reduced the boundary interference, which otherwise resulted in over prediction of secant modulus of the reinforced systems, the effect being more pronounced for weaker reinforcement materials.