Hypothesis, not measured result: we expect students working this way to move faster and with more retention than a grade-level pace predicts. That claim is unproven until the pilot year produces observation records that either support it or do not.
How do we know they are ahead if we don't test? Socratic guides are trained to observe critically and rigorously, and specialize in closely following what each student learns.
Socratic parents and Socratic guides are so closely aligned with the child that they cannot help but see the difference. Children who wake every day excited to learn, and to demonstrate what they know, are inspiring to parents and guides alike. The difference is obvious.