Chain of responsibility

Result.cs

protected string GetClass(string code, bool aprove)
{
    var request = new Request(code, approve, TrainingEvaluations, TrainningEffectiveness);

    var chain = new CriteriaHasEvaluation();    
    chain
        .SetNext(new EffectivenessAssessmentPending())
        .SetNext(new NewItem())
        .SetNext(new CriteriaEvaluated());

    var label = chain.Run(request);

    return label.Value;
}