Abstract: A computer implemented method for breeding scheme testing, including the steps of: a) Receiving input data through a user interface, b) Implementing calculation steps related to a simulation of the breeding scheme and based on said input data, c) Outputting test results data resulting from the simulation, wherein: the calculation steps use at least one modular operation selected among a multiplicity of predefined modular operations stored as respective computer routines available in a computer library, and the input data include at least an indication of at least one modular operation selected by a user.